🗣️ 情景例句
My pleasure, Son.
不客气，儿子。
Many new ideas are discovered during college years.
大部分崭新的观念都产生于大学时代。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，