positive rotation

例句：

1. 1. The car's engine is designed for positive rotation.
   这辆车的发动机设计用于正向旋转。
2. 2. During the test, the student should perform a positive rotation of the arms.
   在测试期间，学生应该进行手臂的正向旋转。
3. 3. The team performed a positive rotation during their game.
   球队在比赛中进行了一次正向旋转。