1·Starting in the late 19th century, eugenicists used primitive ideas about genetics to try to re-engineer the human race.
从19世纪晚期开始，优生学家采用原始的遗传学观点来优化人类基因。
2·The top-down approach: the other way of looking at things is starting from the outside and working your way down to primitive tasks.
自顶向下(top - down)方式：另一种看待事物的方式是从外部入手，然后深入到基本任务。
3·News of the find is only starting to leak out but its expected to start a frenzied search around the coast of Ireland to see if there is more of this primitive organism to be discovered.
该科学发现的消息才刚刚开始传播开来，但预计爱尔兰海岸周围将开始一轮“地毯式搜索”，看看是否可以发现更多的这种原始有机物。
4·This paper, starting with primitive stock-rasing, hunting, exorcising and cult, reveals its cultural connotations.
文章从原始牧业文化、狩猎文化、巫傩文化和崇拜心理学等方面揭示了其文化内涵。