The government struggled to maintain law and order.

　　政府努力維持治安。

　　He could not maintain his maniac speed for much longer.

　　他不能太長(zhǎng)時(shí)間地保持這種瘋狂的速度。

　　We shall maintain our focus on the needs of the customer.

　　我們將繼續(xù)重點(diǎn)關(guān)注顧客的需要。

　　The army has been sent in to maintain order in the capital.

　　軍隊(duì)被調(diào)進(jìn)首都維持治安。