a circular pattern of ocean currents (= flows of water in a particular direction)

The area is one of the world’s five major ocean gyres – huge systems of rotating currents. 这一区域是世界上五大海洋环流之一：巨大的海水旋转流动系统。

a circular movement in which each circle is above, below, or wider than the one before

The hawk wheels in a widening gyre. 雄鹰盘旋的空间越来越大。

to move in circles

He liked to sketch gyring vultures. 他喜欢为盘旋的秃鹰画速写。