This is the story of wildlife conservation in the age of mass extinction.
这是个关于在大规模的物种灭绝时代保护野生动物的故事。
How could be a valuable object in age of mass production?
在大规模生产的年代，这该是一个多么珍贵的物品！
As people age, their ability to build muscle mass declines.
当让人们老去，塑造肌肉的能力就会下降。
Muscle mass naturally diminishes with age.
肌肉组织会随着年龄而自然减少。
The control group was matched for age, body mass index and disease stage.
对照组妇女在年龄，体重指数和疾病的阶段均匹配。
But the present age mass culture already became in the Chinese culture the biggest strength.
而当代大众文化已经成为中国文化中的最大力量。
Most people reach their peak bone mass around age 30.
大部分人在30岁左右的时候到达其骨量峰值。
Most people reach their peak bone mass around age 30.
大部分人在30岁左右的时候到达其骨量峰值。
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