1·He needs to sharpen up before the Olympic trials.
在奥运会选拔赛之前，他需要进一步提高自己。
—— 《牛津词典》
2·We need to sharpen up this knife.
我们需要打磨这把小刀。
3·Ginny tried to sharpen up some rusty typing skills.
金尼试图重拾生疏了的打字技术。
4·But these alternatives may encourage them to sharpen up their act.
但这些替代选择可能会促使他们行动迅速一些。
5·For Mr Obama, the lesson is simple enough: sharpen up, and prepare for a tough two years.
对奥巴马而言，教训简单不过：改善自身，迎接今后两年的艰巨考验。
6·It's not a good reputation and if we want to improve our image we need to sharpen up a bit.
这可不是什么好名声。要是我们想改变形象就必须要努力了。
7·Selegiline is a smelly yellow ointment made from cows' brains, used to treat conditions from Parkinson's disease to depression, and is said to sharpen up the mind.
司立吉林是一种用牛脑制成的味臭色黄的软膏，用于治疗帕金森症、抑郁症等疾病。据说，它有提神醒脑的功效。
8·After being up at night looking after the kids or travelling, many people would love to have something to sharpen them up.
当经过一个晚上照顾孩子或者旅游后，许多人愿意选择使用一些东西使他们变得清醒。
9·Robi is desperate for regular first-team football to sharpen him up for the World Cup finals, but it seems that even when his South Africa adventure ends, he won't be rushing back for Corrie.
罗比急切想在世界杯决赛圈开始之前能够多呆在一线队伍中以得到锻炼，罗比很可能即使南非的征程已经结束，也不会很快回来。
10·So sharpen your elbows, pick up a pair of chopsticks and dig in.
擦亮双眼，拿上你的筷子，跟我来吧。