purpose
n. 目的；用途；意志
vt. 決心；企圖；打算
例句：
The main purpose of industry is to create wealth.
工業(yè)的主要宗旨是創(chuàng)造財富。
I had no inkling of his real purpose until much later.
直到后來很久我才略微知道他的真實目的。