at pains的用法和樣例：
例句
用作形容詞 (adj.)
- He was at pains to find out the truth.
他儘力了解事實真相。 - She took pains to be as charming as possible.
她儘力使自己顯得嫵媚些。 - He always takes great pains with his lectures.
他總是仔細用心地準備講稿。 - That luminary gazed earnestly at some papers before him.
那個大好佬在用心細看面前的報紙。 - We must work hard at the spoken language.
我們必須在口語方面下苦功夫。
