猎豹跑得比斑马快2倍.（三种方式）英语翻译

“猎豹跑得比斑马快2倍”也就是“猎豹跑的速度是斑马的3倍”
Cheetah runs three times as fast as zebra.
Cheetah runs three times faster than zebra.
Cheetah's running speed is three times that of the zebraCheetah runs three times faster than zebra.是否应该改为：Cheetah runs twice faster than zebra.不用把three改为twiceA is three times as fast as BA is three times faster than B这两句话表达的是同一个意思。 在英语中只要使用times，只有“……是……几倍”的语义，不存在“……比……大几倍”的语义。