| 单词 | labor in vain |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔labor〕She has labored in vain to convince them to accept her proposal.她努力说服他们接受她的提议,最终是白费力气。韦氏高阶 |

英语例句辞典收录了559068条英语例句在线翻译词条,基本涵盖了全部常用单词及词组的例句翻译及用法,是英语学习的有利工具。
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| 单词 | labor in vain |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔labor〕She has labored in vain to convince them to accept her proposal.她努力说服他们接受她的提议,最终是白费力气。韦氏高阶 |

英语例句辞典收录了559068条英语例句在线翻译词条,基本涵盖了全部常用单词及词组的例句翻译及用法,是英语学习的有利工具。