他疯狂地挥动手臂以引起注意。

He flailed his arms wildly to get attention.

他向我挥动手臂。

He waves his arm at me.

他疯狂挥动手臂，试图引起救生员的注意。

He was flailing his arms wildly to get the attention of the lifeguard.

她歇斯底里地挥动手臂以引起他们的注意。

She waved her arms hysterically to get their attention.

士兵们挥动手臂向前行进。

The soldiers marched along, swinging their arms.

你挥动手臂——你的手臂来回移动以引起某人的注意。

You wave your arm - you move your arm back and forth to get someone's attention.

我最喜欢的一个说法是挥动手臂来挥动球拍，就像是马车在推动马。

My favorite is swinging the arm to swing the racket, which is the cart pushing the horse.

我是猴子，我会挥动手臂。你能做到吗？

I am a monkey and I wave my arms. Can you do it?

投球手用脚趾踩踏板,挥动手臂, 投出了一个快球.

The pitcher toed the mound, wound up and threw a fast ball.