PHRASAL VERB-ERG (使)更敏锐;(使)改进 If you sharpen something up, or if it sharpens up, it becomes smarter or better than it was. (使)更敏锐;(使)改进 [informal]
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The fashion designers have sharpened up their act in the last few years. [VERB PREP. noun]
时装设计师在过去的几年间表现得更出色了。
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If he really wants to sell his product, he'll have to get his marketing boys to sharpen up. [VERB PREP.]
如果他真想卖出产品，就要让市场人员变得更机敏。