用以援助…，作为援助…之用...

Now then, what's all this crying in aid of?得啦, 还有什麽好哭的?I am collecting money in aid of deaf people.我筹款以帮助聋人.He asked her what her crying was in aid of.他问她哭什么....

in aid of的音标：in aid of的英式发音音标为：[in eid ɔv]in aid of的美式发音音标为：[ɪn ed ʌv]...