impracticable
adj. 行不通的；不能实行的
例句
Such measures would be highly impracticable and almost impossible to apply.
此类措施非常不切实际，几乎不可能付诸实施。
《柯林斯英汉双解大词典》
It would be impracticable for each member to be consulted on every occasion.
不可能每一次都征求每个成员的意见。
《牛津词典》
The plan is impracticable.
这个计划是个架空的东西。
《新英汉大辞典》
