mass noun
1- help, typically of a practical nature（尤指实际的）帮助：
he saw the pilot slumped in his cockpit and went to his aid
他看到飞行员跌倒在驾驶舱里便前去帮助
within six weeks he was walking with the aid of a frame.
六个星期里他靠着支架行走。
1.1
- financial or material help given to a country or area in need（经济或物资）援助：
700,000 tons of food aid 700,000
吨的食品援助
as modifier an aid agency.援助机构。
1.2
- count noun a person or thing that is a source of help or assistance帮手, 帮助者; 辅助物, 辅助手段：
exercise is an important aid to recovery after heart attacks
心脏病发作之后, 锻炼对恢复很有帮助
a teaching aid.
教具。
1.3
- count noun historical a grant of subsidy or tax to a king〈史〉特别津贴; 国库税。
with obj.
1- help, assist, or support (someone or something) in the achievement of something帮助, 协助, 支持：
women were aided in childbirth by midwives
妇女在助产士的帮助下分娩
no obj. research was conducted to aid in making decisions.进行研究来帮助作决定。
1.1
- promote or encourage (something)有助于; 促进：
diet and exercise aid healthy skin.
节食和锻炼对健康肌肤有好处。
短语
aid and abet
- 见ABET.
in aid of
- chiefly Brit. in support of; for the purpose of raising money for〈主英〉支持; 为…筹款：
a charity show in aid of Leukaemia Research.
为白血病研究筹款的义演。
what's(all)this in aid of?
- Brit. informal what is the purpose of this?〈英, 非正式〉 这是为了什么？
词源
late Middle English: from Old French aide (noun)， aidier (verb)， based on Latin adjuvare, from ad- 'towards'+juvare 'to help'.