动词 sharpen:

1. make sharp or sharper

2. make crisp or more crisp and precise

3. become sharp or sharper

4. put (an image) into focus

5. make (images or sounds) sharp or sharper

6. raise the pitch of (musical notes)

7. give a point to

8. make (one's senses) more acute

sharpenvt.使尖锐；磨快；加剧vi.变尖锐sharpening of front前沿变尖sharpen competition使竞争激化sharpening forensics锐化取证sharpen one's pencil森佩雷sharpen my knife forvt.准备惩罚sharpen the appetite增进食欲sharpen his knife forvt.准备惩罚sharpen understanding加深理解sharpen her knife forvt.准备惩罚sharpen our knife forvt.准备惩罚

1. Sharpening the axe is for chopping more firewood.
   磨刀不误砍柴功。
2. As Chiang Kai-shek is now sharpening his swords, we must sharpen ours too.
   现在蒋介石已经在磨刀了，因此，我们也要磨刀。
3. Chain saw files are for sharpening chain saws.
   主要是为了削尖链锯。
4. You had to keep on sharpening the point too because it soon got blunt.
   你的不停的削尖羽毛，否则它就会变得很钝。