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"He is very convenient and fast" 可以用英语说成 "He is very convenient and quick.""Convenient" 来源于拉丁语 "convenientem"，意思是 "方便的"。
"Quick" 来源于古英语 "cwic"，意思是 "快速的"。
例句：
He is very convenient to work with. (他非常方便和合作。)
The new app is quick and easy to use. (新的应用程序使用起来非常快速和简单。) "He is very convenient and fast" 可以用英语说成 "He is very convenient and quick."
"Convenient" 来源于拉丁语 "convenientem"，意思是 "方便的"。
"Quick" 来源于古英语 "cwic"，意思是 "快速的"。
例句：
He is very convenient to work with. (他非常方便和合作。)
The new app is quick and easy to use. (新的应用程序使用起来非常快速和简单。)
来源：作文地带整理
