undertow

n.

回头浪；

复数：undertows

1. Large rocks line the base of the falls, and the man also avoided dangers like strong currents and a vicious undertow.
   瀑布的底部是一块块巨石，该男子还逃过了强劲的水流和凶猛的回头浪。
2. The pull of the undertow can drag swimmer out to sea.
   近岸回流的冲力能把游泳的人涌到海里。
3. The children were carried out to sea by the strong undertow.
   强大的回流把孩子们卷到海里去了。

Undertow over a barred beach
Mass flux and undertow in the surf zone
The undertow of sulfur metabolism on glutamatergic neurotransmission
Velocities in combined undertow and longshore currents
Observation of undertow and turbulence in a laboratory surf zone
Against the Undertow: Language-Minority Education Policy and Politics in the
Observations and a Model of Undertow over the Inner Continental Shelf
The interaction between the undertow and the boundary layer flow on a beach
Humanitarianism with a Sovereign Face: UNHCR in the Global Undertow
Two new disposable bioreactors for plant cell cultures: The wave & undertow bioreactor and the slug bubble bioreactor