我们需要现有数量的两倍。
商队有四十匹骆驼，骡子的数量则是骆驼的两倍。
There were forty camels in the caravan, and the mules were twice forty in number.
中国的网民数量几乎是美国的两倍。
China has almost double the number of US Internet subscribers.
据估计，他们购买的飞机数量是市场可承受量的两倍。
By some estimates, they bought twice as many aeroplanes as the market could support.
OTA所触及的在线消费者数量是供应商触及的近两倍。
OTAs reach almost twice as many consumers than suppliers do online.
这个人口数量已经是10年前的两倍。
我们学校现在的学生数量比去年增加了两倍。
The number of students in our school now is 200% over that of last year.
她拥有的唱片数量是我的两倍。
他的英语字典的数量是我的两倍。
在新的设备引进后，我们公司在2012年生产了和前年数量相比两倍的机器。
After the new equipment was introduced, our company produced _______________ in 2012 as the year before.
农场有多于猪两倍多的牛的数量。（很多人会误读为猪比牛多。）
农场有多于猪两倍多的牛的数量。（很多人会误读为猪比牛多。）
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