1. One sneeze can put as many as 40,000 droplets of saliva and mucus into the air. 一个喷嚏可以将多达40000滴唾液和黏液喷到空气中。
2. Some of these, such as the glandular mucus of snails, were difficult to obtain and outrageously expensive. 其中的一些，如蜗牛的腺粘液，很难获得，而且极其昂贵。
3. It uses so much energy producing the slimy mucus and crawling over it that a mouse traveling the same distance uses only one twelfth as much energy. 它产生粘稠的黏液并在黏液上爬行消耗了大量的能量，而一只老鼠移动同样的距离只消耗了十二分之一的能量。
4. The appearance of sputum also showed the process from watery frothy sputum to mucus sputum to mucopuraleat sputum. 痰液的出现也显示了从含水泡沫状痰液到粘液痰液到粘膜粘液痰液的过程。
5. Be there any blood or mucus in your stool? 你的大便里有血或粘液吗？
