adj.合时宜的；适当的

It's an opportune rain. 这是一场及时雨。

We must seize this highly opportune moment for reform. 我们要抓住时机，现在是改革的最好时机。

The opportune arrival of the bus cut short the boring conversation. 公车的适时到来缩短了这场无聊的谈话。

He arrived at the most opportune moment. 他在最适当的时候到达。

An opportune word is like golden apples encased in silver. 一句简单话，若说得适当，有如银盘中，放上金苹果。