3205 leapfrog

今天我们要学的词是 leapfrog.

leapfrog 原指儿童玩的青蛙跳游戏,引申下来就是跳升,越级。

The U.S. government said it was working to "harden" the border crossing at Tijuana, Mexico, to prepare for the arrival of a migrant caravan leapfrogging its way across western Mexico. 美国政府表示,正在努力“加强”位于墨西哥蒂华纳的过境点,准备应对越过墨西哥西部的移民大军到来。

The U.S. is on pace to leapfrog both Saudi Arabia and Russia to become the world's biggest oil producer. 美国正在逐步超越沙特阿拉伯和俄罗斯,成为世界上最大的石油生产国。

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