ph.
1. He was taking great pains to solve the problem.
他正煞费苦心解决这个问题。
1. 尽力,努力,下苦功：keep pace with 与...齐步前进 . | take pains 尽力,努力,下苦功 . | in part 在某种程度上;部份地 .
2. 努力,尽力,下苦功：take one's time不着急,不着慌 | take pains努力,尽力,下苦功 | take place发生,进行,举行
3. 尽务,煞费苦心：take over / / 接管,接办 | take pains / / 尽务,煞费苦心 | take part in / / 参加