吸烟是导致肺癌的主要因素的翻译：Smoking is the major factor in lung cancer 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Smoking is a major factor in lung cancer

Smoking is the major factor in lung cancer

Smoking is causes the lung cancer the primary factor

Smoking is a cause of cancer of the major factors

Smoking is the major factor in lung cancer