Sure, here's the translated text:
```html
Moody was stunned.
But he quickly reacted, nodded and said, "Good answer, so..."
He lowered his head, checked the roster, and when he looked up again he said, "You are Longbottom, right? I know you... um, I'm very sorry."
"It's okay, professor." Neville smiled at Moody.
"Yes, what Mr. Longbottom just said was correct." Moody lifted the Soul-snatching Curse from the spider, and after the spell was removed, the spider stood there dazed, not knowing what to do. "Crucio is an extremely evil dark magic, only the caster with a strong desire to torture others can successfully cast this spell—thus proving it is never an unintentional mistake."
Moody lifted the magic wand again and pointed it at the spider.
"Crucio!"
Immediately, the spider's legs curled up tightly against its body.
It flipped over, its body convulsed violently, swaying side to side.
The tortured spider made no sound, but everyone believed that if it had vocal organs, it would definitely be screaming at the top of its lungs.
Moody did not remove the magic wand, and the spider began to tremble all over, twitching even more violently—
Not a single student could laugh, they stared wide-eyed and open-mouthed at the writhing and struggling spider on the stage, momentarily forgetting to speak.
Moody's crazy eye was still inspecting Neville, surprised to see him watch the spider's torture with an unchanged expression.
That Longbottom kid...
Scared stiff, or...
Seeing Neville's expression become increasingly calm, Moody also found it uninteresting.
He slowly lowered the magic wand, the spider stopped struggling, as if it had used up all its strength, lying still in place.
"Very painful, this kind of spell." His voice was light, "That's why the Ministry of Magic lists this spell as one of the Three Unforgivable Curses, because it is simply too cruel."
After saying this, Moody looked up again, asked the students, "The last spell, does anyone know what it is?"
Moody's gaze landed on Harry, as if expecting him to answer the question.
Of course, Moody also called his name.
Hermione, who had raised her hand, was disappointed; she really wanted to answer this question.
"Mr. Potter." Moody nodded gently, "I don't need to look at the roster to recognize you among the students—"
He made a small joke, but unfortunately, the students were feeling heavy-hearted at the moment, apart from Ron responding with a couple of laughs, there was no other reaction.
"Alright." Moody said again, "The last spell, do you know what it is, Mr. Potter?"
"Avada Kedavra, professor." Harry answered blandly, "It's the top Unforgivable Curse, capable of snatching away a person's life instantly."
When hearing the name of this spell, the whole classroom fell silent, students showing expressions of extreme fear.
"Okay, sit down, Mr. Potter." Moody nodded and said, looking at the students again: "Being at your age and having a sense of reverence for such evil spells, that's good— but I need to remind you, the Wizarding World is not safe, you can't expect the magic world after graduation to be as safe as Hogwarts? I don't want you to hesitate over the fear of the Killing Curse when encountering a dark wizard—what I'm doing now is eliminating your fear of the Three Unforgivable Curses."
Saying this, he raised the magic wand.
"Avada Kedavra!"
A dazzling green light made it hard for anyone to open their eyes, along with a chaotic noise, as if an invisible giant was flying through the air—meanwhile, that spider flipped over, lying on its back on the desk, with no visible injury, but undoubtedly dead.
The classroom once again fell completely silent, only the sounds of wind riffling through books and Moody's movements echoed.
"Even knowing this spell, I am not worried you will misuse it—Avada Kedavra requires very strong magical power as a foundation." Moody's loud voice echoed through the classroom, "You can all take out your wand, aim at me, recite this spell, I suspect at most I'll just have a nosebleed... but that doesn't matter. I'm here to teach you how to cast spells."
"So, have you learned it?" Moody shouted again, startling the students.
"Learned it." Harry nodded.
Moody's body shook.
A week passed, yet in this school there are still fearless little creatures?
His crazy eye stared unblinkingly at Harry, telling him: "Is it? Then you can try—if you successfully cast this spell, I can award Gryffindor twenty points."
Finally, he added a sentence: "Come, aim your magic wand at me—"
Ron, Hermione: ?
No, professor?
Are you really so reckless to risk death?
Whether Harry has cast Avada Kedavra before they don't know, but certain that Harry definitely knows how to use this spell.
I think you've eaten too many red beans.
"Better use the spider, professor." Harry tentatively asked.
"No, won't use it!" Moody said roughly, "Aim at me, kid—you definitely won't kill me, at most make my nose bleed..."
At this moment, Draco also raised his head.
Of course, he knew Harry was good at Avada Kedavra; in his imagination, probably even Voldemort isn't as skilled as him.
But, Moody...
Draco didn't intend to say anything, instead he was interested to watch Harry's response.
Reckless people are common, but like the professor to such a reckless degree, it's the first time he's seen it.
"I'd rather use the spider, professor." Harry said to Moody, "There needs to be a backup, maybe trying with the spider first is better, don't you think?"
But Moody still stubbornly made Harry use the Killing Curse on him, extremely stubborn, like eight Nightmares couldn't persuade him.
Harry helplessly raised the magic wand.
"Avada Kedavra!"
A strong green light burst from the tip of Harry's wand, directly hitting the bottle; the entire classroom seemed to be engulfed by this intense green light, especially at close range, Moody even saw his deceased great-grandmother for a moment.
No, something's wrong...
He shook his head, trying to get back to his senses.
Then, he saw the spider inside the bottle flipped over motionless.
After that, he remembered, earlier he was letting Harry experimenting with Avada Kedavra.
Meanwhile, a sense of fear rose in his heart.
This... this doesn't seem right?
By Merlin's pants, if this Killing Curse had struck him a moment ago, his life would've ended there.
What are children growing up on these days?
"You, come with me!" Moody said roughly, "We'll go to the Headmaster's Office! I must discuss this with Dumbledore! By Merlin's beard, having a student like you in Hogwarts makes me afraid you..."
He didn't finish the sentence, but everyone understood what he meant.
"Professor!" Hermione stood up defending him: "Harry is not that kind of person, you shouldn't speculate about him without reason!"
Moody said nothing and limped out of the classroom.
At the door, he didn't forget to look back and shake his head, signaling Harry to follow.
Walking towards the Headmaster's Office, Moody kept thinking.
This is no ordinary student, there must be a heavy punch! Let him know the bitterness of the magic world society!