I did break a bone in my foot playing football a long time ago but that's all healed up now.
我很久以前踢足球的时候确实摔断了脚上的一根骨头，不过现在已经完全好了。
Like Jill, many people do not know they have osteoporosis unless they break a bone. Or, they may find that they are getting shorter.
象吉尔一样，有许多人在发生骨折前还不知道自己得了骨质疏松症，或许他们可能会发现自己变矮了。
When modern mammals bite into bone they occasionally break a tooth, especially if they are starving and trying to tear off every last piece of meat.
现代动物咬进猎物骨头，偶尔会把牙齿弄碎，特别是在极度饥饿状态下——这个时侯，一丝肉也不会剩下。
Overall, harder times should therefore lead to increased chances of a tooth striking bone and the possibility of a break.
总的说来，生存条件越是严酷，“牙劈骨头”的几率就越大，“骨头劈牙”的可能性也越大。
There is no break but he took a knock to the leg and the membrane covering the bone is swollen.
这不用休息，但是他的腿被碰撞过一次后，骨头的薄膜已经肿胀。
"Even at these forces, only a few struts of bone might break; these would heal easily," he said.
“即使在这种压力下，剑角龙骨骼中也只有一些小支柱的骨头才会断裂，而且这些骨骼很容易恢复”他说。
In mice with normal ovaries and approximately half the normal concentration of FSH, bone mass increased due to a decline in bone resorption by cells known as osteoclasts, which break down bone.
卵巢功能正常和FSH接近正常浓度一半的小白鼠，由于破骨细胞的破骨作用引起骨吸收作用的减弱，从而使骨量增加。
Still, another kind is a buoying fracture. This happens with a bone that bans but not break.
有一种“弯曲骨折”，这是当一根骨头弯曲但没折断。
Still, another kind is a buoying fracture. This happens with a bone that bans but not break.
有一种“弯曲骨折”，这是当一根骨头弯曲但没折断。
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