双语例句
-
The sex can be identified base on the shape of anal fin, and there are some obvious pearl organs on anal fin of male individuals during reproduction seasons.
可根据臀鳍的形状来鉴别青海湖裸鲤的雌雄，在繁殖期间，雄性个体在臀鳍部位出现明显的珠星。
-
Results Patient's immunity, age and sex, health habit, hospitalized environment and institution, responsibility of doctor and nurse are the main causes to resulting in patient's anal infection.
结果：病人自身免疫力、年龄与性别、卫生习惯、就医环境及制度、医护人员的责任心等是病人发生肛周感染的主要原因。
百科
1. 肛交是指在人类性行为中，以勃起的阴茎插入性伴侣肛门内的行为，有时也泛指其他涉及肛门的性行为，包括用假阴茎、手指或其他物品插入肛门，或以其他器官对肛门进行性刺激的行为，对象不限性别。