骨头硬 hard bone -- a dauntless, unyielding person 股骨头 caput femoris; caput ossis femoris; femoral head; head of femur ..
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骨头看起来是脆硬的，但它也有一定的弹性，使得骨骼能够承受相当的打击。
Although apparently rigid, bones exhibit a degree of elasticitythat enables the skeleton to withstand considerable impact.
小蜗牛：毛虫姊姊没有骨头，也爬不快，为什么她却不用背这个又硬又重的壳呢?。
Small snail: sister no bones caterpillars but also unpleasant climb why she did not back the hard shell it again?
小蜗牛：可是蚯蚓弟弟也没骨头爬不快，也不会变成蝴蝶他什么不背这个又硬又重的壳呢？
Small Snail: but my brother did not earthworms unpleasant climb the bones will not become a butterfly he does not back the hard shell it again?
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