n.双眼望远镜
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。
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。
