| 词汇 | sharpen |
| 释义 | verb She sharpened her pencils and started drawing. This knife needs sharpening. 这把刀需要磨了。 The outline of the trees sharpened as it grew lighter. 随着天色转亮，树的轮廓变得清晰了。 Her hearing was sharpened by fear. The sea air sharpened our appetites. 海上的空气增进了我们的食欲。 Clare’s kindness sharpened his awareness of the differences between them. There is a need to sharpen the focus of the discussion. 有必要使讨论的焦点更加集中。 sharpen (up) He needs to sharpen up before the Olympic trials. 在奥运会选拔赛之前，他需要进一步磨砺自己。 sharpen something (up) She's doing a course to sharpen her business skills. 她正进修，以提高自己的业务技能。 We’re looking to sharpen up the product’s image. |
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