perform ce的用法和樣例：
例句
- The engine oil must perform many direct functions, while not causing any debits in other areas of engine performance.
機油有很多功能，然而它會在發動機性能的其他方面也引起很多缺點。
- A performance product must perform correctly in the end-use for which it was designed.
性能產品必須正確地用於最終設計目的。
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