旋转地

The young people gyrated on the dance floor.

这些年轻人舞池里不停地旋转。

The propeller started to spin around.

螺旋桨开始飞快地旋转起来。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们星身重力作用下崩溃和更加快地旋转时，星中心形成了密质块。这叫做原恒星。