
edge:優勢,優越條件
keep one's edge (stay sharp)保持最好的狀態
反義詞:lose one's edge
例句:I have to speak English every day just in order to keep my edge. 為了保持在英語上的優勢,我不得不每天說英語.
David Beckham is a great soccer player but if he doesn't practice every day, he'll lose his edge. 貝克漢姆是位偉大球員,如果他不每天練球的話他就會失去他的優勢.