汤加

The paper expatiates on the design process of the virtual scene simulation system based on Creator and Vega.

阐述了基于Creator/Vega的虚拟场景仿真系统的设计过程。

The education of the three sons aged 14, 10, and 8 was entirely entrusted to Herbart on condition that he should write a lengthy report by letter to the father every two months.

所以教师不但要引导学生从有关旧观念基础趋向特定新观念的兴趣，而且最好要建立组合已有观念的思想圈，足以控制学生一生中的兴趣。