sprocket
n
1 each of several teeth on a wheel that connect with the links of a chain or the holes in a film or in paper or magnetic tape 链轮齿.
2 (also `sprocket-wheel) such a wheel, eg on a bicycle 链轮. =>illus at App 1 见附录1插图, page xiii.
🗣️ 情景例句
I want a 3-button wireless mouse.
我想要一个三键光电鼠标。
Haste makes waste.
拔苗助长。
The one with the money got such a fright that he dropped the bag.