Polyfluorocarbon
[化] 多氟烴; 多氟代烴
??? 情景例句
Please wait for me. I won't be long.
清等等我，就一會兒。
You can use quarters, dimes and nickels.
你可以使用2角5分、1角和5分三種硬幣。
She instructed in her will that if that were to happen, all the money should go to an organization for helping the blind called Helping Hand.
于是她在遺囑中指示如果此事發生，這筆錢應該全部捐獻給一個名叫'援助之手'的盲人救濟組織。