perfects
v.
使熟练( perfect的第三人称单数 );
使完全;
使…完美;
充分地指导（告诉）;
例句:
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She perfects herself in French.
她精通法语。
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Chapter three strengthens creditor interest protection and perfects corporation liquidation legislation.
第三章加强债权人利益保护,完善公司清算立法.
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Undoubtedly it advances and perfects the traditional approaches to urban design enormously.
这无疑是对传统方法的极大推进与完善.