edge:优势,优越条件

keep one's edge (stay sharp)保持最好的状态    

反义词:lose one's edge

例句:I have to speak English every day just in order to keep my edge. 为了保持在英语上的优势,我不得不每天说英语.

David Beckham is a great soccer player but if he doesn't practice every day, he'll lose his edge. 贝克汉姆是位伟大球员,如果他不每天练球的话他就会失去他的优势.

来源:恒星英语学习网-口语频道
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