Recently physicians have determined that stomach ulcers are not caused by stress, alcohol, or rich foods, but a bacterium that dwells in the mucous lining of the stomach.
最近，医生们发现胃溃疡不是由压力、酒精或油腻的食物引起的，而是由一种存在于胃粘膜内壁的细菌引起的。
2
It is the nasal mucous you have to worry about - so no nose-kissing.
鼻黏液才是你所要担心的——所以不要鼻吻。
3
"By thinning this mucous [layer], we increased the susceptibility to infection," Finlay said at the meeting.