他不擅长数学。

He is not good at maths.

youdao

从他的信中，我知道他数学学得很好但是不擅长体育。

From his letters, I know that he is good at maths and bad at PE.

youdao

从他的信中，我知道他数学学得很好但是不擅长体育。

From his letters, I know that he is good at maths and bad at PE.

youdao