Our speed over the ground was a miserable 2.2 knots.
我们在地面上的速度只有区区的2.2节。
By the biomechanical measurement, the authors analyze the footwork of 50 healthy old men and women over the age of 60. The footwork is conducted on the flat ground with normal speed.
采用生物力学测试方法，对50例60岁以上的健康男女老年人，进行平地常速的步态分析。
By the biomechanical measurement, the authors analyze the footwork of 50 healthy old men and women over the age of 60. The footwork is conducted on the flat ground with normal speed.
采用生物力学测试方法，对50例60岁以上的健康男女老年人，进行平地常速的步态分析。
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