1·Objective To study species and distribution of fleas in Zhangjiakou.
目的研究张家口市蚤的种类及其分布。
2·Objective To study species and distribution of rodents in Zhangjiakou.
目的研究张家口市啮齿动物种类与分布。
3·The new study found that 70 percent of rodent and primate groups have species with an appendix.
这项新的研究发现，70%的啮齿动物和灵长类动物的物种具有阑尾。
4·A study, published in January in the US magazine, Science, found that almost all recorded shark species have fallen by half in the past 8 to 15 years.
1月在美国杂志《科学》上发表的一项研究发现，在过去8至15年间，几乎所有有记录的鲨鱼种类的数量都减少了一半。
5·Archaeological study of wood charcoal found in hearths dating to the various episodes of occupation indicated that the species use changed in a patterned way.
考古研究发现，在壁炉中发现的木炭可以追溯到不同的时期，这表明物种的用途发生了模式上的变化。
6·A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct species.
一项针对古代和现代大象的研究得出一个出人意料的结论：非洲大象已经分化成两个不同的物种。
7·It's not only the study of human population, but the populations of non-human species, including viruses.
这不仅是对人类种群的研究，也是对非人类种群（包括病毒）的研究。
8·The researchers study the proteins in the venom genes of various species of colubrids.
研究人员研究了不同种类的胭脂鱼的毒液基因中的蛋白质。
9·In that study, each of eight different trilobite species was observed to undergo a gradual change in the number of segments.
在这项研究中，观察到八种不同的三叶虫，每一种都经历了身体节数的逐渐变化。
10·"The big message from this study is that there is another species out there, that is meaningful in its communication, so that's not unique to humans," said Dr. Hobaiter.
霍拜托特博士说：“这项研究的重要信息是，还有另一个物种在进行有意义的交流，所以这并不是人类独有的。”