These reactions influence how our genetic code is expressed: how each gene is strengthened or weakened, even turned on or off, to build our bones, brains and all the other parts of our bodies.
这些反应影响着我们的遗传密码的表现方式：每个基因是如何被加强或削弱，甚至其作用机制是如何被打开或关闭，从而构成我们的骨骼、大脑以及身体的其他部位的。
Like the foundation of a house, our bones usually don't get our attention until something goes wrong.
骨骼就好比房子的地基在没有发现问题的时候很少引起我们的注意。
Heavy elements are equally essential for life: Witness the oxygen we breathe, the calcium in our bones, the iron in our blood.
重元素同样是生活的必需品：其证据是我们呼吸的氧气、我们骨骼中的钙、我们血液中的铁。
"Vitamin D has become a very hot topic in medicine now as we are discovering very high levels of vitamin D deficiency in our population, not only in the U.S.,but worldwide" Vitamin D helps our bodies absorb calcium and helps form and maintain strong bones.
VOA: standard.2010.05.28
"We have been tasked by our respective presidents the foreign minister and I, to put meat on the bones, so to speak, to get to work to make sure that the expectations of both President Zuma and President Obama are met as we work more closely together on our bi-lateral relationship as well as on regional and global challenges.
VOA: standard.2009.08.08
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