他们说牛奶是他们的粘液更多、更粘稠并且难以排出。

They complain that milk makes them have more mucous or makes mucous thicker and harder to expel.

youdao

他们说牛奶是他们的粘液更多、更粘稠并且难以排出。

They complain that milk makes them have more mucous or makes mucous thicker and harder to expel.

youdao