He trained his binoculars on the distant figures.他把双筒望远镜对准远处的景物。

If I had binoculars, I could see that comet clearly.如果我有望远镜，我就可以清楚地看见那颗彗星。

He took out the binoculars and adjusted the focus.他取出双筒望远镜并调整了焦距。

I watched the birds through my binoculars.
我用双筒望远镜观鸟。

He watched the play through his binoculars.
他用双筒望远镜看戏。

The binoculars are in that leather case.
双筒望远镜在那皮箱里。

binoculars的详细讲解：

binoculars是复数形式的名词，但表达的是单数概念，若表示数量，须用单位词pair。如“一副双筒望远镜”是a pair of binoculars。

binoculars用作主语时，谓语动词应该用复数形式。

binoculars的相关资料：

He trained his binoculars on the distant figures.他把双筒望远镜对准远处的景物。

If I had binoculars, I could see that comet clearly.如果我有望远镜，我就可以清楚地看见那颗彗星。

He took out the binoculars and adjusted the focus.他取出双筒望远镜并调整了焦距。

I watched the birds through my binoculars.
我用双筒望远镜观鸟。

He watched the play through his binoculars.
他用双筒望远镜看戏。

The binoculars are in that leather case.
双筒望远镜在那皮箱里。

binoculars的详细讲解：

• telescope望远镜
• lens镜头
• opera glasses(观剧用的)小型双眼望远...
• field glasses双筒望远镜(野外镜...
• eyeglasses眼镜