noun🔗Share胸腺 A ductless gland, consisting mainly of lymphatic tissue, located behind the top of the breastbone. It is most active during puberty, after which it shrinks in size. It plays an important role in the development of the immune system and produces lymphocytes.""During childhood, the thymus helps the body learn to fight off infections, but it becomes smaller as we get older." "在儿童时期，胸腺帮助身体学习抵抗感染，但随着年龄增长，它会逐渐变小。bodyorgananatomyphysiologymedicinebiologyChat with AIVocabulary GamePractice Reading
