aid
单词辨析：
最普通用词，指积极地为他人提供物质、精神或其他方面的帮助，主语可以是人或物。
I helped her to carry the suitcase up the stairs.
我帮她把行李箱拎上了楼。
My cane helps me walk.
我的拐杖帮助我行走。
Your suggestion helped us a lot.
你的建议对我们帮助很大。
较正式用词，多指提供经济上或其他急需的帮助，强调帮助有困难的弱者，主语通常是人，常与介词 in/with 连用。
The refugees were aided by the UN.
难民们得到了联合国的援助。
We aided him in looking after his children.
我们帮他一起照看孩子。
尤指起协助的作用，多用于帮助他人学习、工作或研究，常与介词 in/with 连用。
He was employed to assist in the development of new equipment.
他受聘协助开发新设备。
A team of nurses assisted the doctor with the operation.
一组护士协助医生施行手术。
相关例句：
We're coming to the aid of the people of Somalia at the request of the United Nations
我们应联合国的要求前去救援索马里的民众。
He succeeded with the aid of a completely new method he discovered
借助于自己发现的一种全新的方法，他获得了成功。
The country has no access to foreign loans or financial aid
该国得不到任何外国贷款或经济援助。
U.N. aid convoys have unimpeded access to the city.
联合国救援车队可以畅通无阻地进入该市。
The export sector will aid the economic recovery
出口产业将促进经济复苏。
Horrified neighbours rushed to his aid as he fell.
他摔下来时，惊恐的邻居们赶忙冲过去救他。