“There were many species in cages closely packed together,” says Yi.
“许多物种在笼子里紧紧挤在一起”,他说。
This could explain why large numbers of species are packed together in the tropics, but it doesn't seem to hold consistently.
这就解释了为什么热带地区的生物总是聚集在一起,密度很大,但是这一理论并不能站住脚。
That constellation of risk factors that gets packed together tells you more in some cases about a person's risk for disease than if all you knew was their weight.
上述提到的一系列的风险因素,能告诉我们更多有关个人的患病风险,这比仅仅知道体重更能说明问题
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