| 词汇 | step in |
| 释义 | step in intransitive verb ① (intervene) 介入 ▸ a local businessman stepped in with a large donation for the school 当地一位商人出面捐了一大笔钱给学校 ▸ the coach was forced to step in to stop the two athletes from coming to blows 教练被迫出面干预，阻止这两名运动员斗殴 ② (act as substitute) 代替 ▸ thanks for stepping in when David became ill 谢谢你在戴维生病期间接替他 |
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