Everyone knows the lungs take a beating from smoking, but.

众人皆知，吸烟对肺部伤害很大。

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Brittle Bones Everyone knows the lungs take a beating from smoking, but.

骨质疏松众人皆知，吸烟对肺部伤害很大。

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Brittle Bones Everyone knows the lungs take a beating from smoking, but.

骨质疏松众人皆知，吸烟对肺部伤害很大。

youdao