Undergirds
vt. 在底部加固（undergird的第三人称单数形式）
🗣️ 情景例句
A surprise?
惊喜？
I'm afraid it was a bother for you to do this.
我害怕做这会给你带来麻烦。
First, I tell the actors where to stand and where to move.
首先，我要告诉演员在剧中站立和移动的位置。