| 词组 | at the drop of a hat |
| 释义 | at the drop of a hatadv. phr. informal 〖非正式〗1Without waiting; immediately; promptly. 立即；马上。◆ If you need a babysitter quickly, call Mary, because she can come at the drop of a hat.你如果急需临时照看小孩的人，可以打电话给玛丽，因为她能马上就来。2Whenever you have a chance; with very little cause or urging. 一有机会（就）；动不动（就）。◆ He was quarrelsome and ready to fight at the drop of a hat.他喜欢争吵，动不动就想打架。 |
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