我不擅长数学，但我希望有一天数学能够及格。

I am not good at math, but I hope math can pass one day.

youdao

我的老师说，虽然我不擅长数学，但是我擅长篮球。

My teacher said, though I was not good at maths, I was good at basketball.

youdao

我们通过集资获得了50万美元，我不擅长数学，但对于30个人而言,50万美元并不能用太久。

We've raised half a million dollars, and I'm not good at maths, but half a million dollars with 30 people doesn't last for any long.

youdao

The math quiz is on calculus, and I am really bad at it.

这次数学考试是关于微积分的，是我特别不擅长的部分。

I'm worried 实战 - SpeakingMax英语口语达人

I'm just like, really bad at math and science.

我只是不擅长数学和科学。

考试考砸了怎么办 - SpeakingMax英语口语达人