This is the 5398th most frequent Chinese word.
伸手
"伸手" means "to stretch out one's hand" or "to reach out."
The phrase '伸手' is used here to indicate the physical action of extending one's hand to grab something.
他突然伸手抓住了我的手臂。
He suddenly reached out and grabbed my arm.
In this sentence, '伸手' demonstrates the act of surreptitiously extending one's hand for stealing or reaching into something.
小偷在拥挤的车厢里伸手偷了钱包。
In the crowded carriage, the thief reached out his hand to steal a wallet.
Here, '伸手' metaphorically represents asking or seeking help from someone.