viscin

例句：

1. 1. The doctor advised him to drink more water and to avoid spicy foods, which could cause viscin in the stomach.
   医生建议他多饮水，避免食用辛辣的食物，以免刺激胃部产生肠液。
2. 2. The patient's symptoms worsened as the viscin accumulated in his intestines.
   随着肠液在患者的肠道中积累，患者的症状恶化了。
3. 3. The scientist observed that the viscin produced by the bacteria was different from that of humans.
   科学家发现，这种细菌产生的肠液与人类的肠液有所不同。