So the most likely explanation of this finding is that the sooner a smoker lights up, the more smoke is taken into the lungs, and the higher the level of exposure to cancer causing chemicals.

所以，研究发现的最可能的解释就是吸烟者起床后越快吸烟，吸入肺里的烟越多，更容易患上由于化学物质引起的癌症。

youdao

So the most likely explanation of this finding is that the sooner a smoker lights up, the more smoke is taken into the lungs, and the higher the level of exposure to cancer causing chemicals.

所以，研究发现的最可能的解释就是吸烟者起床后越快吸烟，吸入肺里的烟越多，更容易患上由于化学物质引起的癌症。

youdao