Tsim
abbr. 三甲基甲硅烷基咪唑（trimethyl-silyl-imidazole）
🗣️ 情景例句
We were all sorry when we heard that your brother had had an accident.
我对你弟弟的意外感到遗憾。
When did you take the examination?
你什么时候去参加考试？
On which ones?
哪几个品目呢，