1·To trace back the value orientation of different periods, all have differently the incline of denying people and repel persons.
追溯不同时期的价值取向，都不同程度地存在着否定人和排斥人的倾向。
2·The reason is that so far as what we have of reliable language materials, Yin and Zhou Dynasty is the earliest period in Chinese language history that we can trace back.
因为就今可见的确实可靠的语文资料来说，殷周时期是中国语言文献历史当中我们能够追溯的最早的一个阶段。
3·We can also trace back any pallet over 18 months to the day and time it was produced.
我们还可以追溯任何托盘超过18个月的一天，当时生产的。
4·But the electrical brain activations detected with ERPs are harder to trace back to their exact origins inside the brain.
但是通过ERP监测脑的电激活比精确追溯它们脑内的起源要困难。
5·This text from coverage, fund supply with, law support, management system four respect probe into present China shortage issue of social security system, trace back to its cause.
本文从覆盖范围、基金供给、法律支撑、管理体制四个方面探讨了当前中国社会保障制度的短缺问题，追溯其成因。