adj.不切实际的；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。
The plan is impracticable. 这个计划是不可行的。
It was a thoroughly impracticable plan. 那是个根本无法实行的计划。
