opportune

adj

1. suitable or at a time that is suitable or advantageous especially for a particular purpose

e.g. an opportune place to make camp
an opportune arrival

1. （时机）恰当的，适宜的；及时的；适时的
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.

e.g. I believe that I have arrived at a very opportune moment...
我想我到得正是时候。
e.g. The timing of the meetings was opportune.
会议的时间安排得恰到好处。

1.

1. 合时宜的：opponent 对手,敌手 | opportune 合时宜的 | opportunity 机会

2. 恰好的：opponent 对立的 | opportune 恰好的 | opportunism 机会主义

3. 恰好的,适宜的：opportunity: 机会,时机 | opportune: 恰好的,适宜的 | old pal: 老友

4. 适时的：opinio 观点 opinion | oportuna 适时的 opportune | optika 光学的 optical