Getting there by public transport is just too impractical.搭乘公交车到那儿去, 太不切实际了。

an impractical solution一个不现实的解决办法

When stalking subjects, a tripod is impractical.当追踪拍摄对象时, 三脚架没法用。

Geniuses are supposed to be difficult, eccentric and hopelessly impractical.天才通常都被认为难相处、古怪且毫无动手能力。

He is intelligent but too impractical for commercial work.在商务活动中他虽有才智, 却太缺乏实践能力。