noun🔗Share表皮，外皮，覆盖层。 An outer protective covering such as the feathers or skin of an animal, a rind or shell."The integument of the apple, its crisp skin, protected the fruit from insects and bruising. "苹果的表皮，也就是它那层脆脆的皮，保护果实免受昆虫侵害和磕碰损伤。anatomybiologyanimalorganismbodyChat with AIVocabulary GamePractice Reading
noun🔗Share珠被，外种皮 The outer layer of an ovule, which develops into the seed coat."The integument of the developing sunflower seed hardens to form its tough outer shell. "正在发育的向日葵种子，其珠被会硬化形成坚硬的外壳 (zheng4 zai4 fa1 yu4 de xiang4 ri4 kui2 zhong3 zi3, qi2 zhu1 bei4 hui4 ying4 hua4 xing2 cheng2 jian1 ying4 de wai4 ke2)。plantbiologyseedpartChat with AIVocabulary GamePractice Reading
