“难事”造句

改善家庭能耗并非难事。
It doesn't take much to improve the energy efficiency of your home.

[谚]世上无难事,只怕有心人.
Nothing is difficult to a man who wills.

一旦他们试着种植兰花，就会发现那并不是什么难事。
Once they have tried growing orchids, they will see there is really nothing to it.

• #难事