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
before getting to the tough stuff--math.
在对付难缠的东西 数学 之前。
I was about to leave.
我正要出门。
There is no shortage of tipsters around offering 'get-rich-quick' opportunities.