1. He contended that this division was maintained until the late nineteenth century. 他认为这种分裂一直持续到19世纪晚期。
2. Paul Radin contended that investigators rarely spent enough time with the tribes they were observing. Paul Radin 认为，调查人员很少花足够的时间在他们所观察的部落上。
3. SPEW contended, and WIDC concurred, that controllable conditions in such factories were responsible for the development of lead poisoning. SPEW 认为，这些工厂的可控条件是导致铅中毒增加的原因，WIDC 也同意这一观点。
4. They contended that land animals that began to adapt to aquatic life would soon be neither fowl nor fish, incapable of surviving in either medium. 他们认为，开始适应水生生活的陆地动物很快就会变成既不是鸟也不是鱼，无法在任何一种环境中生存。
