表示意外发生，或表示在不久的将来出现一些问题(例如“磁盘空间低”)。

An indication that something unexpected happened, or indicative of some problem in the near future (e. g. 'disk space low').

youdao

我的很多客户告诉我，他们对我回复邮件的速度表示意外，同时，他们的评价也让在我意料之外。

I've had plenty of clients tell me that they were surprised by how fast I responded to email, which, in turn, surprised me.

youdao