I would propose that scientific archeological expeditions and governmental authorities sell excavated artifacts on the open market.
我建议科学的考古考察和政府部门在公开市场上出售出土的文物。
2
I assume that most students taking the introductory level class would have little or no experience with archeological research, but that's ok.
我想大多数上入门级课程的学生的考古研究经验都是很少或没有的，但没关系。
3
What we think we know derives chiefly from archeological evidence, which is before writing--mute evidence that has to be interpreted and is very complicated.