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.
一组卡片，通常是一叠完整的穿孔卡片，它具有确定的服务对象和明确的用途。
A collection of cards, commonly a complete set of cards which have been punched for a definite service or purpose.
一种表示确定的概念或观念的语言元素，例如字树。
An element of language that expresses a definite image or idea, for example, the word tree.
