The man at the back in the blue jacket是啥意思,主要是at the back

The man at the back in the blue jacket是啥意思,主要是at the back at the back sit at the back of the back sit at the back of the back at the back of the classroom中文翻译 at the back of 和at back of的区别 at back 和 at the back 的区别 at back和at the back的区别 look at the man and the boy the man ram after the donkey at 是look at the man还是look at man正确? at the back of的反义词 at the back of 反义词是啥呢? at the back of的中文 at the back of 的造句 All the students are back at school. They're____knocking at the back door(尝试) at the back of 怎么用