spiral motion

• 螺旋运动

spiral motion的用法和样例：

例句

1. A spiral motion of fluid within a limited area, especially a whirling mass of water or air that sucks everything near it toward its center.
   漩涡在一定地域内液体的螺旋状运动，尤指把附近各种东西吸向其中心的螺旋水流或空气
2. A circular or spiral motion, especially a circular ocean current.
   游涡一种圆形或螺旋形的运动，特别是做圆环运动的海水水流