sharpen

动词 v.
/ˈʃɑːpən/    /ˈʃɑɹpən/

英文释义

动词 v.
  1. To make sharp. figuratively,sometimes,transitive
    — to sharpen a pencil or a knife or a musical note
  2. To become sharp. intransitive
    — The organizers said they had found themselves "more involved in the web of social convulsions and violence that is tormenting our country. The present economic crisis, the grave political instability and the rapidly sharpening violence have finally overtaken […] our wishes.

词形变化

sharpens present,singular,third-person sharpening participle,present sharpened participle,past sharpened past

词源

From Middle English scharpenen, scharpnen, equivalent to sharp + -en.
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