Dipyridine
[医]双吡啶
🗣️ 情景例句
Well, hi, fellas.
你们大家好。
We never know the worth (or value) of water till the well is dry.
井枯方知水可贵。
my aunt unexpectedly returned one afternoon with a party of guests and instructed Bessie to prepare dinner.
一天下午，她出其不意地回来了，带来一大批客人，吩咐贝西准备晚饭。