Bookend
n. 书挡, 压书具
🗣️ 情景例句
If you really mean it,
假如你是说真的，
I'm sorry to hear that.
听到这个消息我感到遗憾。
As the Commanding Officer explained later, one half of the station did not know what the other half was doing!
正如指挥官后来解释的那样，基地的这半边不知道那半边正在干什么！