rotary motion
rotary engine
rotary club
A: Do we need to replace all the rotaries in the machine?
A：我们需要更换机器里的所有转子吗？
B: Yes, they are showing significant wear and tear.
B：是的，它们显示出明显的磨损。
1) 旋转部件（复数）
2) 转子（复数）
3) 环形交叉路口（复数）
1. 旋转体或转子的复数形式
noun
1. The plural form of rotary, referring to objects or mechanisms that rotate, or circular junctions in traffic.
Synonym: rotors, roundabouts