Immune system
语法信息
有生性状态
无生命
形态构成
复合词
不可数
singular
not gender specific
例子
The immune system is the body's defense mechanism against pathogens and foreign substances, comprised of various cells, tissues, and organs.
免疫系统是身体对抗病原体和外来物质的防御机制，由各种细胞、组织和器官组成。
