drop down

1.The fruit has begun to drop down.

水果开始落地。

2.The overripe apples dropped down from the trees.

过熟苹果掉了下来。

3.After the crash,onlookers said that the plane had suddenly dropped down out of the sky.

飞机坠毁后旁观者说飞机是突然掉下来。

4.RISI, a global forest products information source, reports an average paper demand drop of 4% in 2007 with coated freesheet grades down 9%, mechanical grades down 2%, uncoated freesheet down 4%.

瑞西，全球森林产品信息来源，报均需求量下降了4 ％ ，在2007年与涂层免费等级下降了9 ％ ，机械等级下降2 ％ ，未免费下跌4 ％ 。