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
造句
用作名詞(n.)
First focus the reticle with the image field boundary by turning the eyecup. 首先在圖像的邊界對準十字線旋轉眼杯。
I generally prefer shooting with an eye-level viewfinder, though, and wish Sony had padded the hard plastic eyecup. 然而，我通常更喜歡使用與眼等高的取景器拍攝，希望索尼能夠增加硬塑料洗眼器。