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- An instance or occurrence of menstruation. 经期月经的例子或出现
- Finds the next occurrence of the search text. 查找搜索文本的下一个匹配项。
- There are many such casual associations of species. 有许多这样偶然的种类组合。
- The occurrence of ACS was increased with age. ACS发生率随着年龄增长而增高 ;
- The occurrence of storms delayed our trip. 暴风雨延误了我们的旅行。
- To note the occurrence of an event. 注明一个事件的出现。
- A phylogenetic classification of species. 按演化发展对物种进行的分类
- The occurrence of malodor has obvious seasona1. 恶臭的发生具有明显的季节性。
- The occurrence of cervicitis in young women was... 结论定期妇科体检可更好的了解女职工的健康状况。
- Only men exists in the one of species. 人类只是那时存在的物种之一。
- The Origin of Species is an important book. “物种起源”是一本重要的书。
- An event; a thing that happens or appears, for example, an occurrence of impulse noise. 一种事件，或发生或出现的一件事情，例如，脉冲噪声的出现。
- There are millions of species of animals. 而动物种类有几百万种。
- A selection process in which the occurrence of one entity is more likely than the occurrence of another. 一种选择处理，其中一个事件发生的可能性大于另一个事件。
- People only the one of species at that time. 人类只是那时存在的物种之一。
- Renyard's theory of species variegation? |雷诺的物种多样性？
- Darwin challenged the fixity of species. 达尔文对生物物种的稳定性提出了质疑。
- A routine or storage used to compensate for a difference in rate of flow of data, or time of occurrence of events, when transferring data from one device to another. 当数据从一个设备传送到另一个设备时，用于补偿数据流速率差或事件发生时间差的一种例行程序或存储器。
- The occurrence of hemoglobin in root nodules is notable. 值得注意的是根瘤中出现血红蛋白。
- The occurrence of different forms, stages, or types in individual organisms or in organisms of the same species, independent of sexual variations. 多态性; 多型现象不受性别差异影响，在有机个体或同种物种的有机体中出现不同形态、阶段或类型
