noun🔗Share形成层 A layer of cells between the xylem and the phloem that is responsible for the secondary growth of roots and stems."The cambium in a tree trunk is the living layer that creates new wood and bark, allowing the tree to grow wider each year. "树干中的形成层是具有活性的细胞层，它产生新的木材和树皮，使树每年都能长粗。biologyplantanatomystructureorganismnatureChat with AIVocabulary GamePractice Reading
noun🔗Share骨膜 Periosteum, a membrane that covers the outer surface of bones"My doctor explained that the cambium, responsible for bone growth and repair, had been damaged in my shin during the soccer game. "我的医生解释说，我在踢足球时小腿的骨膜（也就是负责骨骼生长和修复的那层膜）受伤了。anatomybiologyChat with AIVocabulary GamePractice Reading
noun🔗Share形成层，生长层 One of the humours formerly believed to nourish the bodily organs."Ancient medical texts described the cambium as a vital humour, thought to nourish the body's organs. "古代医学典籍将形成层描述为一种重要的体液，被认为能够滋养身体的各个器官。(Gǔdài yīxué diǎnjí jiāng xíngchéng céng miáoshù wéi yī zhǒng zhòngyào de tǐyè, bèi rènwéi nénggòu zīyǎng shēntǐ de gège qìguān.)medicinephysiologybodyChat with AIVocabulary GamePractice Reading
