Visuometer
视力计
🗣️ 情景例句
Then make a left turn.
然后向左转〃
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。