A circular or spiral motion, especially a circular ocean current.
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
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