V-ERG
(四肢)拼命亂動,使勁亂擺
If your arms or legs flail or if you flail them about, they wave about in an energetic but uncontrolled way.
例句
His arms were flailing in all directions...
他的手臂胡亂揮舞著。
He gave a choked cry, flailed his arms wildly for a moment, and then went over the edge.
他悶哼了一聲，手臂亂揮了幾下，就從邊上摔了下去。