Unsurprisingly, breathing becomes much harder and smokers are much more at risk of coughs and chest infections.

不出所料，呼吸变得更加困难，吸烟者患咳嗽和胸部感染的风险更大。

Earlier this month, Wiggins had been forced to pull out the Tour of Italy because of a chest infection.

本月初，威金斯由于肺部感染被迫放弃环意自行车赛。

Oh my God. I had this really bad chest infection on tour in Europe once.

- 我的天啊。我曾经在欧洲巡回演出时感染过这种非常严重的胸部感染。