| 单词 | 刚出现征兆时 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔pre-emption〕You can pre-empt pain by taking a painkiller at the first warning sign.刚出现征兆时，就服用止痛片来预防疼痛。柯林斯高阶〔pre-empt〕You can pre-empt pain by taking a painkiller at the first warning sign.刚出现征兆时, 就服用止痛片来预防疼痛。外研社新世纪 |
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