s. showing or resulting from lack of judgment or wisdom
a. 愚蠢的, 欠考虑的, 不明智的, 轻率的
1. It's unwise to invest all your money in one stock.
将所有的钱都投资在一只股票上是不明智的。
2. She made an unwise decision by skipping school.
她选择逃学是个不明智的决定。
3. Driving without a seatbelt is unwise and dangerous.
不系安全带开车是不明智且危险的。