I'm waiting for the right moment to tell him the bad news.

我得找个适当的时机告诉他这个坏消息。

《牛津词典》

I'm waiting, for the moment that everything will wake up.

为了那万物苏醒的瞬间而苦苦等候。

youdao

I'm waiting for the right moment.

我在等待恰当的时机。

youdao

It's not, I'm assured, a factional thing - an army of continuity Blairites receiving their orders and waiting for the moment to strike.

BBC: Breakfast at Tony's