sharpen

sharpen
verb
  1. make or become sharp
    削尖;磨尖;磨快;变尖;变锋利;尖锐化;急剧化
    [withobj.]she sharpened her pencil.
    她削尖铅笔。
    [noobj.]her tone sharpened to exasperation.
    她语调变尖,显出恼怒。
    ■improve or cause to improve
    (使)改善;(使)改进
    [noobj.]they've got to sharpen up in front of the goal.
    他们临门一脚还需要提高。
    [withobj.]students will sharpen up their reading skills.
    学生们要改进他们的阅读技巧。
派生
sharpener
noun
英语宝典
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