Nothing is known of the period between the birth of the twins and Shakespeare's emergence as a dramatist in London in the early 1590s.
从双胞胎出生到16世纪90年代初莎士比亚在伦敦作为剧作家崭露头角的这个阶段，人们一无所知。
2
This period also saw the emergenceof application servers designed to decouple a client-side programmer from the many details found in the operating system and associated interfaces.
在这一阶段，出现了用来使客户端程序开发人员不再关心操作系统的繁杂的细节和相关接口的应用服务器。
3
The migration and emergence (incubation period) of the worm (s) take between 10 to 14 months after infection.