don't hold your breathinformal used to say that something is not going to happen soon 不会很快,有你等的 The system’s due for an update, but don’t hold your breath. 系统应该要更新了,不过有你等的。
don’t hold your breath• If you're waiting for the Cubs to win the series, don't hold your breath.
→ don’t hold your breath at breath(2)