convenient没有近义词。
adj. 方便的近便的实用的<废语>适当的
The land transportation in China is becoming more and more convenient.
中国的陆路交通越来越方便。If it's convenient I can come tomorrow.
方便的话，我可以明天过来。
I'll call back at a more convenient time.
在方便的时候我会回电话的。
It is very convenient to pay by credit card.
用信用卡付款非常方便。
Can you spare five minutes when it's convenient?
方便时能占用你五分钟时间吗
