Ear wax, which is secreted by ceruminous glands in the auditory meatus of the outer ear. Cerumen protects the delicate lining of the meatus and helps to prevent microorganisms from entering the ear.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。