the state of being convenient

I like the convenience of living close to work. 我喜欢住在工作地点附近，这样很方便。

Just for convenience, I'm going to live at my mother's place until my new apartment is ready. 为了方便，我打算在我的新居收拾好之前先住在我母亲那儿。

To the great conveniency of the public, the company reduced the price of goods in the English market.

when you want

The goods will be delivered at your convenience. 货物随要随到。

The machine records your messages and you can answer them at your convenience.

There's no urgency, so please don't make the journey other than at your convenience.

The documents are ready for you to pick up at your convenience.

I would appreciate the chance to meet with you at your convenience to discuss these matters.

as soon as you like or can

Please return the completed form at your earliest convenience. 请将填好的表格尽快交回。

I would be grateful if you could call me back at your earliest convenience.

There's a letter here from Charles Gordon, asking for a meeting at your earliest convenience.

Please contact me at your earliest convenience so that we may exchange any relevant information.

We look forward to receiving the payment at your earliest convenience.

a device or machine, usually in the house, that operates quickly and needs little effort

The house has every modern convenience. 这所房子里现代化便利设施一应俱全。

The conveniencies of life become more plentiful every day .

a public toilet