Dysmenorrhea
n. 痛经\\n[医] 痛经
🗣️ 情景例句
I had a busy day. I'm done.
我今天很忙，现在精疲力尽。
You cannot have two forenoons in the same day.
一日之中不可能有两个上午。
that a series of deep soundings was obtained in the Atlantic and the first samples were collected by dredging the bottom.
才在大西洋测得一个个海水深度，同时通过挖掘海底，取得了研究海底的首批样品。