在沙漠里建水上乐园是个不切实际的想法。

Building a water park in the desert is totally ___impractical.

这条裙子虽然漂亮，但设计太不实用了，连口袋都没有。

This dress is beautiful but ___impractical with no pockets at all.

这个设计虽然很漂亮，但在日常生活中完全不实用。

The design is beautiful but completely ___impractical for daily use.