Policeman: Look, Sir! There's a light on in the library.

警察：先生，你瞧，图书馆里亮着灯。

youdao

Policeman: a light's on in the library.

警察甲：图书馆里有盏灯还在亮着。

youdao

Policeman: a light's on in the library.

警察甲：图书馆里有盏灯还在亮着。

youdao