impracticableness

n. 不能实行(做不到, 行不通, 不现实)

例句与用法：

Originally Edison used platinum alloys for the filament, in the belief that carbon was impracticable.

爱迪生不相信碳可作灯丝用，所以一开始就用铂合金作灯丝。

It's evident that the plan is impracticable.

很明显这计划是不能实现的。

The plan is impracticable.

这个计划是不可行的。

It was impracticable to think that we could build the house in one week.

以为我们用一周的时间就能把房子盖好，这种想法是不切实际的。

词形变化：

副词: impracticably | 名词: impracticability |