| 1. 倍数增加的句型译成"是……的n倍"或"比……增加(n-1)倍"e.g. The output of the 
                    paper mill is now three times as high as it was in 1980.
 这家造纸厂的产量比1980年增加两倍。
 e.g. Asia is four times 
                    larger than Europe.
 亚洲比欧洲大3倍。
  2. 倍数减小的句型译成"是……的1/n"或"比……减少(n-1)/n"e.g. A body would weigh six times less on the moon than 
                    on the earth.
 物体在月球上的重量是地球上的1/6。(减少5/6)
 e.g. My luggage is twice 
                    as light as his.
 我的行李是他行李的1/2。
 如果倍数很大,翻译时无需减一。
 常见的表示数的增减和倍数的表示方法有:
 1. ···倍数+ as +形容词或副词+ 
                    as +···
 2. ···倍数+ 比较级+ than 
                    +···
 3. ···数字+ 比较级+ than 
                    +···
 4. 倍数 + 名词
 5. 动词 + by + 数字或倍数(净增加的数字或倍数)
 6. 动词 + to + 数字
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