"a projecting part of a rotating machinery," 1777, from Dutch cam "cog of a wheel," originally "comb;" cognate of English comb (n.). This might have combined with English camber "having a slight arch;" or the whole thing could be from camber.
cam (n.2)
abbreviation of camera, by 1990.
实用例句
1. Brian remembers learning to fish in the River Cam.
布赖恩记得曾在剑河学过钓鱼。来自柯林斯例句
2. They actively cam-paigned for the vote.
他们积极参加竞选运动。来自柯林斯例句
3. The name Cambridge is a derivative of the name of the River'Cam '.
‘Cambridge’这个名字是 ‘ Cam ’ 河的派生词.来自辞典例句
4. University degree or holder with minimum Three years experience in CAM engineer.
大专及以上学历并拥有三年以上与塑料模具制造相关的CAM经验.来自互联网
5. Images can also be replayed directly from the 30 - CAM to the television.