Obstructiveness
n. 妨害;阻碍
🗣️ 情景例句
That's us, Susan.
那正是我们， Susan。
A good book is a best friend who never turns his back upon us.
一本好书，莫逆之交。
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，