There are steps you can take to help reduce abdominal fat and maintain lean muscle mass as you age in order to protect both your physical and mental wellbeing.
你可以在年龄增长的过程中采取一些措施来减少腹部脂肪，保持精瘦肌肉含量，从而维持你的身心健康。
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。
Lennon was hunted by a fan—then a very new, horrifying phenomenon, now simply seen as a sick but inevitable consequence of celebrity in the mass media age.
在那时这还是种新的可怕的现象，但现在已经很常见了，这似乎成了大众媒体时代的名人们不可避免的反常结局。
The scientists used the Hubble to figure out the direction of the star's travels and the distance from the galactic center, along with the star's mass, age and speed.
科学家们利用哈勃望远镜计算出该恒星行进的方向和离银河系中心的距离，连同他的质量、年龄和速度一起计算。
The researchers found that those children who had less sleep in their earlier years were at greater risk of having a higher Body Mass Index at age seven.
研究人员发现早年睡眠较少的那些七岁的孩子有较高的‘身体质量指数’的风险。
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！
But strength training can help you preserve and enhance your muscle mass - at any age.
但力量训练可以帮助你保持并增加肌肉——任何年龄都可以。
The higher your peak bone mass, the more bone you have "in the bank" and the less likely you are to develop osteoporosis as you age.
你的估量峰值越高，你的“银行”中就拥有越多的骨骼，而且在你上了年纪后患上骨质疏松症的可能性越小。
Unlike the mass-produced reproductions of the machine age, these copies are not just cheap, they are free.
与机器时代的大批量复制不同，这些拷贝要便宜得多，它们是免费的。
Nutritionists employ similar tricks to establish what is a healthy body-mass index for children in different age groups.
营养学家采用类似手法来确定不同年龄段儿童的健康身体质量指标是多少。
Those in large speed-dating sessions instead made choices based on quick and easy-to-assess characteristics such as age, height, body mass index, and weight.
而在大的约会活动中，人们则更倾向于依靠年龄、身高、三维以及体重等简单快速的特征来进行评定。
Astronomers who study star clusters have noticed that the speed at which a star of a given mass spins (measured by tracking cool, dark spots on the surface) also seems to vary predictably with age.
研究星团的天文学家已经注意到质量一定的行星(通过追踪表面阴暗冷却斑点来测量)，其旋转速度随着其星龄呈现可预测性的变化。
Your pediatrician can tell you your child's body mass index - a formula that considers height, weight, age and gender - at the annual checkup.
儿科医生可以在年度检查的时候告诉你孩子的体重指数——通过一个考虑到身高、体重、年龄和性别的计算公式。
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。
But the study did account for a variety of factors, including age, body mass index and education.
不过，这项研究的确已经考虑到了很多因素，例如年龄、人群密集度和受教育程度等。
Other factors may include body mass, age, smoking habits, drug or hormone use, stress and health conditions such as anxiety disorders.
其它可能的影响因素还包括体重、年龄、吸烟习惯、药物或激素的使用、压力及是否患有焦虑症等健康状况。
You're also at greater risk if you're extremely thin (with a body mass index of 19 or less) or have a small body frame because you may have less bone mass to draw from as you age.
如果你相当单薄(体重指数为19或更少)或者身体骨架很小的话，你患上骨质疏松的风险也很高，因为如果这样的话，当上年纪后你的骨量可能会较少而不胜流失。
Muscle mass naturally diminishes with age.
肌肉组织会随着年龄而自然减少。
Being divorced at, say, age 33 in 1962 meant becoming a singleton amid a mass of married people, as the overwhelming majority of the population married by age 30.
1962年33岁的人离婚意味着在已婚人群中成为单身，那时绝大多数人30岁前结婚。
As noted, we lose muscle mass with age. Especially quick to deteriorate are fast-twitch muscle fibers, which power quick, explosive movements.
如上而言，随着年纪的增大我们的肌肉会失去力量，尤其是快速收缩的肌肉纤维更为明显，这部分纤维让我们跑得快，启动有爆发力。
As you age, a number of changes occur in your skeletal muscles, which are the ones that move your arms, your legs and the rest of your body. You lose muscle mass — you simply have less of the stuff.
当你上了年纪，那些手臂、腿部和身体其它部分动作所需的骨骼肌肉会发生一系列变化。
The findings held even after the researchers took into account other factors that could affect telomere length, including the women's chronological age, body mass index and smoking habits.
即便研究人员们考虑了其它能影响端粒长度的因素（比如她们的实际年龄、身体质量指数和吸烟习惯），这些发现依旧站得住脚。
MAIN OUTCOME MEASURES: the correlation between age, menopausal years, menopause age, height, body mass, BMI and bone density as well as the regression equation.
主要观察指标：年龄、绝经年限、绝经年龄、身高、体质量和人体质量指数与骨密度的相关性及回归方程。
27typically, as people age, their bone mass decreases, making them more vulnerable to bone fractures.
27通常当人们衰老的时候，他们的骨质减少，使他们容易骨折。
27typically, as people age, their bone mass decreases, making them more vulnerable to bone fractures.
27通常当人们衰老的时候，他们的骨质减少，使他们容易骨折。
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