数学一直是我学业上的弱点。

Math has always been one of my ___weaknesses in school.

她对名牌包包有特别的偏爱，尽管知道这样花钱不好。

She has a ___weakness for designer bags, even though she knows it's bad for her budget.

手术后的虚弱使她连上楼梯都很困难。

After the surgery, her ___weaknesses made it hard to even climb stairs.