Postamplifier
后置放大器
🗣️ 情景例句
Keep to the rules, and nothing can go wrong.
按规矩办事情就不会出差子。
He dies like a beast who has done no good while he lived.
生时不做好事，死了像个畜生。
And when do you take your next exams?
还有，你什么时候参加下次考试？