mucus
n[U]
sticky slimy substance produced by the mucous membrane; any similar slimy substance (黏膜分泌的)黏液; 类似黏液的物质
a nose blocked with mucus 黏液堵塞的鼻子
a trail of mucus left by a snail or slug 蜗牛或蛞蝓留下的黏液痕迹.
This product is doing very well in foreign countries.
这种产品在国外很畅销。
Though my aunt pursued what was, in those days, an enlightened policy, in that she never allowed her domestic staff to work more than eight hours a day, she was extremely difficult to please.