convenient的名词是convenience。方便；适宜；便利；便利的事物（或设施）；方便的用具
复数： conveniences
例：A bicycle is often more convenient than a car in towns。
在城镇骑自行车常常比开车更方便。
相关介绍
Please telephone at your earliest convenience。
请尽早打电话。
Like working women anywhere， Asian women are buying convenience foods。
像其他地方的职业女性一样，亚洲女性也购买方便食品。
I rely too much on convenience food。
我太依赖方便食品了。
You'll find these meals quick and convenient to prepare。
你会发现准备这样的饭既快又省事。
