If something happens at an opportune time or is opportune, it happens at the time that is most convenient for someone or most likely to lead to success.
例句
I believe that I have arrived at a very opportune moment...我想我到得正是時候。The timing of the meetings was opportune.會議的時間安排得恰到好處。
英漢詞典釋義
adj.
(時間)合適的,恰好的;及時的,適時的
an opportune moment適當的時候
英英詞典釋義
Adjective
1. suitable or at a time that is suitable or advantageous especially for a particular purpose;
"an opportune place to make camp""an opportune arrival"