primary track

In the last decade, the development of Mathematical Olympiad competition in China has deviated from the normal track, triggering a series of questions and has had a significant impact on the primary and secondary education.

近十几年来，奥数竞赛在中国的发展偏离了正常的轨道，引发了一系列问题，对中小学教育产生了重大影响。

Track Irregularity is the primary cause for producing vibration of locomotive and car and share force between wheel and rail, and the important embodiment in comprehensive performance and carrying capacity for track infrastructure.

轨道不平顺是引起机车车辆产生振动和轮轨作用力的主要原因，是轨道结构综合性能和承载能力的重要体现。

While the country is on track to achieve gender parity in primary education by2015, greater economic growth is crucial to achieving other goals, says Bowles.

Bowles说，尽管所罗门群岛正稳步朝着2015年之前实现初等教育两性比例相同目标迈进，但提高经济发展水平是实现其它目标的关键。

Humanism in the Recondition and Study of the Primary and Middle Schools' Track and Field Sports Teaching

以人为本的中小学田径教学改革研究

Where the primary track all novices, screams everywhere, ha ha good terror.

那里的初级道上全是生手, 到处都是尖叫声, 哈哈好恐怖的.