CNN news 2010-10-29 加文本

made up of由…组成，由…构成

例句：The committee is made up of fifty people.
      委员会是由五十个人组成的。

2.Trees were knocked down.

knock down〈非正〉击倒, 撞倒

例句：He knocked his opponent down with one blow in the competition.
      比赛中他一拳就打倒了他的对手。

      This old fighter has never been knocked down by an opponent.
      这位老拳击手从未被对手打倒过。