Dimethylated
二甲基化的
🗣️ 情景例句
in the past few weeks.
在最近几个星期。
Before you go on, I have a question.
在你接着干之前，我有一个问题。
It is all too easy to blame the railway authorities when something does go wrong.
因此，一旦铁路上真出了问题，人们便不加思索地责备铁路当局。