The average hotel occupancy rate increased threefold to over 60 per cent this month.

酒店的平均入住率上升三倍,本月已达百分之六十以上.

In just over a year's time, membership has increased threefold.

在短短一年间，成员人数已增加三倍。

In the following six years commercial land prices in its six major cities increased threefold to three times higher than those in the United States at the time.

在接下来的六年的六个主要城市商业地产价格翻了三番，比美国的当时还要高三倍。