Pentamethyl
五甲基
🗣️ 情景例句
Wrong number.
打错电话了。
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
When he woke up, his hands and feet had already been tied together.
当他醒过来的时候，他的手脚已经被捆起来了。