n.援助；幫助

We are ready to render them economic assistance. 我們愿意向他們提供經(jīng)濟(jì)援助。

He gave the assistance to me when I was in trouble. 我有麻煩時(shí),他向我伸出援助之手。

I really appreciate your assistance. 衷心感謝您的幫助。

assistance的意思是“幫助,援助”,屬于正式用語,其后可接in v -ing。