| 单词 | be at pains |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔emphasize〕I have been at pains to emphasize the positive aspects of discipline.我极力强调了纪律的积极作用。牛津搭配〔pain〕I have been at pains to describe the nature of bronze in scientific terms.我一直在尽力设法用科学术语来描述青铜的性质。英汉大词典 |
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