这条运河如果不经常疏浚，就会淤塞。
The canal would soon fill up with mud if not regularly dredged.
如果不经常练习，你的英语将会荒废。
一个埋头脑力劳动的人，如果不经常活动四肢，那是一件极其痛苦的事情。
A hard mental work, if not often activities limbs, that is a very painful thing.
但是如果您要查询的数据不经常改变怎么办？
But what if the data you are querying doesn't change very often?
如果你平时不经常用手机，那么你要准备一个。
如果你不经常练习使用英语，有一天你的英语会生锈。
If you don't practice your English often enough, one day it will become rusty.
如果你不经常练习使用英语。
如果房屋不经常打扫，尘土很快就越积越多。
The dust and dirt soon accumulate if a house is not cleaned regularly.
如果房屋不经常打扫，尘土很快就越积越多。
The dust and dirt soon accumulate if a house is not cleaned regularly.
应用推荐