unwise

It is extremely unwise to hike alone in the desert without carrying at least a gallon of water.

(Chinese) 在沙漠中独自徒步而不携带至少一加仑水是非常不明智的。

Investing all your life savings into a single volatile stock is an unwise financial decision.

(Chinese) 将毕生积蓄全部投入到一只波动巨大的股票中是一个不明智的财务决定。