It can be infected by some human relative viruses. Recently, studies demonstrated that tupaia hepatic cells can support the replication of HBV and HCV.

近年来的研究显示，树鼩肝细胞在体外可支持乙、丙型肝炎病毒复制，是一种潜在的乙、丙型肝炎病毒易感的小动物模型。

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Also, anthropologists speculate that the relative helplessness of human children has made multiple caregivers a vital necessity - that encourages bringing dad into the picture.

此外，人类学家推测，人类儿童的相对无助使得他们极其需要众多的照顾者——促使父亲也加入进来。

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However, at times of high vector densities the relative importance of mosquito-to-human transmission may increase.

不过，在媒蚊密度较高时，蚊虫向人传播病毒的相对重要性可能增加。

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So as one reads the epic one senses this very deep ambivalence regarding the relative virtues and evils of civilized life and many of the features that make us human.

当人们读到这一段的时候，总是会对文明生活方式的利弊,产生一种很矛盾的感情,然而正是这些特性让人区别于动物。

耶鲁公开课 - 旧约导论课程节选

Where the good citizen is relative to the regime you might say regime-specific the good human being so he believes is good everywhere.

好公民与政体相关，那是对特定的政体而言,但好人，他相信,在那里都是好人。

耶鲁公开课 - 政治哲学导论课程节选

Citizen virtue is relative or we might say regime relative. Only in the best regime he says will the good citizen and the good human being ? be the same. But what is the best regime?

公民美德是相对的，或我们也可说,政体是相对的，他说，仅在最佳政体之中,好公民才会和好人等同,但什么是最佳政体？

耶鲁公开课 - 政治哲学导论课程节选

Initial findings have revealed that 15% of the gorilla genome is closer to human DNA than to our nearest evolutionary relative, the chimpanzee.

CNN: First gorilla genome map offers clues to human evolution

The virus, a hybrid of swine, avian and human flu, can jump from person to person with relative ease.

CNN: Hysteria over swine flu is the real danger, some say

But Ditmire from Fox-Pitt Kelton says the so-called hybrid half-human, half-electronic system at NYSE "is at a relative disadvantage" on days like Thursday.

FORBES: Crank Up The Volume