at one's convenience
在方便的时候,在适宜的地方 when and where it suits one
Come by to pick me up at your convenience.在你方便的时候来接我。

make a convenience of
过分利用某人 use sb too much
Some patients make a convenience of nurses.有些病人过分利用护士们的热心服务。

It is convenience for people to live near a railway station.住在火车站附近的人乘车很方便。
The building has all the modern conveniences.这栋建筑装有各种现代化的设施。
There isn't public convenience there.那里没有公共厕所。

［同义词］   appliance, usefulness
［反义词］   inconvenience, uselessness
［词源］＜拉丁语convenientia(一起来,在身边)