It's evident that the plan is impracticable.

很显这计划是能实现。

The scheme was criticized as too idealistic and impracticable.

人们批评这个方案太理想化,行通。

The damage it would cause makes the idea utterly impracticable.

这个想法可能造成损害，以致根本能采纳。

It is impracticable for some parents to exact obedience of their children.

有些父母强令其子女服从是现实。