Translation of "basics" into Chinese

It is a basic quality of an employee to complete his tasks within a fixed time.

在限定时间内完成任务是一个职员的基本素质。

He identified the basic principles underlying modern photography.

他发现的基本原理为现代的摄影术奠定了基础。

The mobilization of domestic resources, foreign direct investment and good economic policy are the basic drivers of development.

调集国内资源、外国直接投资和良好的经济政策是推动发展的基本因素。