| 单词 | at once |
| 释义 | at once 1 : at the same time同时 two people talking at once同时说话的两个人 The book is at once [=both] funny and sad.这本书既有趣又伤感。 She had several projects going on all at once.她同时进行着几个项目。 2 : right away : without delay : immediately立刻；马上 We need to leave at once.我们需要马上离开。 You can call the office and get advice at once.你可以给办公室打电话，立刻就能得到建议。 once |
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