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...我想我到得正是时候。The timing of the meetings was opportune.会议的时间安排得恰到好处。
英汉词典释义
adj.
(时间)合适的,恰好的;及时的,适时的
an opportune moment适当的时候
英英词典释义
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"