Most lung cancer begins at this point.
大部分肺癌就从这里发端。
From a medical point of view, smoking is harmful to lung.
从医学的角度看，吸烟对肺有伤害。
From a medical point of view, smoking is harmful to the lung.
从医学的角度看，吸烟对肺有伤害。
Most lung cancer begins at this point.
大部分肺癌开始于这一点。
Most lung cancer begins at this point.
大部分肺癌开始于这一点。
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