我还没有见过他的新老师，于是我给她发了一封电子邮件作为提醒，信中解释说这种情况已经持续了一段时间，并不是心血来潮。

I hadn't met his new teacher yet, so I sent her a heads-up by email, explaining that this had been going on for some time; it wasn't just a whim.

youdao

我还没有见过他的新老师，于是我给她发了一封电子邮件作为提醒，信中解释说这种情况已经持续了一段时间，并不是心血来潮。

I hadn't met his new teacher yet, so I sent her a heads-up by email, explaining that this had been going on for some time; it wasn't just a whim.

youdao