a small vessel with a rim curved to fit the orbit of the eye; use to apply medicated or cleansing solution to the eyeball;
"an eyecup is called an eyebath in Britain"
(embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina
例句
用作名词 (n.)
First focus the reticle with the image field boundary by turning the eyecup. 首先在图像的边界对准十字线旋转眼杯。
I generally prefer shooting with an eye-level viewfinder, though, and wish Sony had padded the hard plastic eyecup. 然而，我通常更喜欢使用与眼等高的取景器拍摄，希望索尼能够增加硬塑料洗眼器。
美
['aɪˌkʌp]
