If the small-brained australopithecines were not toolmakers, what evolutionary advantage did they gain by walking upright?
如果脑子比较小的古猿不是工具制造者,那他们直立行走的进化优势是什么?
When young things begin to gain health, they gain it rapidly.
当年轻人开始恢复健康时,他们很快就能康复。
A new study says the weight they gain may increase their diabetes risk in the short term.
VOA: special.2010.01.13
Now when people gain enough weight, they gain it all over their body, but those are the typical weight gain patterns and it happens for hormonal reasons.
如果人们增重很多,那么他们全身会均匀地增胖,但刚才讲的是比较典型的增重模式,激素是导致它们发生的原因
How we could take cells that are differentiated to some extent and make them de-differentiate, to go back in the process of differentiation so that they gain more potential.
我们如何把一些已经分化到,一定程度的细胞去分化,使其回到分化之前,重新获得更多的潜能
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