adv.愚蠢地，可笑地

He acted foolishly by jumping into the icy river without a wetsuit.
他愚蠢地没有穿救生衣就跳进了冰冷的河里。
She foolishly entrusted her savings to a dishonest friend.
她天真地把她的积蓄交给了一个不诚实的朋友。
The child's foolish decision led to a dangerous situation.
孩子的愚蠢决定导致了危险的局面。
Don't be foolish, you'll only hurt yourself.
别犯傻，只会让自己受伤。
His foolish attempt to impress others ended in failure.
他想取悦他人的愚蠢尝试以失败告终。
She foolishly believed that he would change his ways.
她愚蠢地认为他会改变他的行为。
The investors were foolish to invest in a risky startup without proper research.
投资者没有做足功课就盲目投资风险高的初创公司，这是愚蠢的。
It was foolish of you to leave your wallet on the table like that.
你那样把钱包放在桌子上真是愚蠢。
The parents' foolish indulgence spoiled their child rotten.
父母的溺爱使孩子变得任性。
His foolish optimism blinded him to the potential risks.
他的盲目乐观使他忽视了潜在的风险。