[wèi le]
for; for the sake of; in order to
for the sake of modernization; in order to realize modernization
为了实现现代化
for the cause of...
为了... 的事业
in the interests of...; for the benefit of ...; on behalf of one's interests
为了... 的利益
He is going to get material for a new book.
他为了写一本新书而在收集素材。