stretch out a helping hand 基本例句 伸出援助之手,助一臂之力 I will lend you a helping hand if you are in trouble.你如有困难，我会助一臂之力的。 The vicar asked the congregation for volunteers to lend a hand with the preparations for the Harvest Festival.教区牧师请求全体教徒自愿为收获节的筹备工作助一臂之力。