括号匹配：%可以让光标从它当前所在的括号跳转到与它相匹配的括号上去，对花括号和圆括号，方括号都有效，常用于手工检查括号是否匹对。

Parenthesis Matching: % Takes you to the matching parenthesis, curly brace, or bracket, depending on what you are on. This always comes in handy as a quick double-check.

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克拉匹多是一种新药，价格更贵，可用来作为对阿斯匹林过敏病人的替代品。

Clopidogrel is a newer, more expensive, alternative to aspirin which may be used in some patients intolerant of aspirin.

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