他正在使用的是双镜头反光镜相机。

The camera he's using now is a twin - lens reflex one.

youdao

他给我一双望远镜，他叫我用它来远望。

A pair of binoculars was handed to me, and I was told to look through.

youdao

他给我一双望远镜，他叫我用它来远望。

A pair of binoculars was handed to me, and I was told to look through.

youdao