| 单词 | undertow |
| 释义 | undertow n[sing] current below the surface of the sea, moving in the opposite direction to the surface current, esp the current caused by the backward flow of a wave breaking on a beach （海面下与海面水流呈反向流动的）回流（尤指浪拍岸退回形成的） caught in an undertow 碰上回流 The pull of the undertow can drag swimmers out to sea. 近岸回流的冲力能把游泳的人涌到海里. |
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