开裂,裂开到达成熟期时在一定的位置裂开的口子,以释放或显露出内含物,如从果实的裂口处释放出来的种子或从花粉囊中散发出的花粉 An opening at definite places at maturity to release or expose the contents, such as seeds from a fruit or pollen from an anther.
既然嫁接能缩短成熟期,就应当试一试。 Since grafting reduces maturing age, it should be tried.
幼雏还未达到性别成熟期的幼小动物 A young animal that has not reached sexual maturity.
青少年是身体成熟期。 Teenage is the period at which the body reaches maturity.