lend a hand

基本解释

Aid workers say part of the problem is the thousands of volunteers who are driving here hoping to lend a hand.
救援工作人员说，问题是，几千名志愿工作人员正在开车进入这个地区，提供帮助。
PAKSBAB’s founder, Darcey Donovan P.E., left for Northern Pakistan to lend a hand in rebuilding the devastatedregion.
PAKSBAB的创始人达塞·多诺万·P·E前往巴基斯坦北部，帮助重建受灾地区。
The motivation for my actions can be totally ego-driven and selfish, but as long as they’re also aligned with helping others, the larger body loves to lend a hand.
我的行为动机可能完全是由自我驱动和自私的，但只要这种自我驱动和自私能够同帮助他人结合起来，上层的“躯体”就会帮上一手。

Anyway, I figured I'd lend a hand. - Be careful.- Always am.
So, you know, I actually paused and tried to lend a hand with this and what struck me at the end of this experience of walking this individual through the process of buying a ticket was actually a recurring theme in my mind for this course.
所以，你们懂的，我停下来帮助了她,令我惊奇的是,这次买票的经历,正是我们这次课程的,一个主题。
哈佛公开课 - 计算机科学课程节选
Would you lend me a hand?
能帮我一个忙吗？
Would you 实战 - SpeakingMax英语口语达人

Time and again, they lend a hand to their neighbors and give back to their country.
WHITEHOUSE: The 2010 State of the Union Address