In the primary stages of their civilization, they had no metal tools.

在他们文明的最初阶段没有金属工具。

The most basic primary school English as a foreign language education, with special teaching object - is in the primary stages of learning their mother tongue.

小学英语作为最基础的外语教育，有着特殊的教学对象——正处在母语学习阶段的小学生。

At present, the focuses are archaeological research, regional study, and periodical division, which are primary stages. It has not got the level of synthetic study.

目前，对它的研究还处于田野考古学研究、区域研究和分期断代研究这样的基础研究上，还没有上升到综合研究的层次。

Primary in to files in the staging directory. It immediately acknowledges receipt of the log data buffer to the primary before it actually applies or stages it.

主要服务器将使用暂存目录中的文件，并在实际应用或暂存将保存到主要服务器的日志数据缓存之前，应立即识别对它的接收。

Mathematics education from kindergarten, primary, middle school, high school to university is considered as a whole. The various stages are closely related and interactive but still different.

数学教育从幼儿园、小学、初中、高中到大学是一个整体，各阶段之间既有联系又有区别，是相互作用、互为影响的。