这是个惊人的，甚至难以置信的数字，而玖龙公司在过去几年的增长速度甚至更快。
It is a staggering, almost unbelievable figure, except that Nine Dragons has grown at an even faster rate in the past.
当检测到雷克斯龙模型以45英里/小时速度奔跑时，他们的计算显示它每条腿上的支撑性肌肉占整个体重的43%。
When they tested the model on a T. rex running about 45 mph their calculations showed it would have needed 43 percent of its body weight in each leg as supportive muscle.
目前，关于霸王龙行进的速度问题尚没有一个确切的答案，但是，Persons却坚信，霸王龙的脚力在其生态体系中是首屈一指的。
It's unclear at present what T. rex's exact sprinting speed was, but Persons believes this fleet footed dinosaur could run down all other animals in its ecosystem.
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