今天我们来看这样一个句子: The explanation is that the Maya excavated depressions, or modified natural depressio... [查看全文]
Inequalities of gender have also existed in pastoralist societies, but they seem to have been softened by the... [查看全文]
The disorienting effects of this mismatch between external time cues and internal schedules may persist, like ... [查看全文]
Normally, the constantly changing levels of an animal's activity——sleeping, feeding,moving, reproducing, meta... [查看全文]
今天我们来看这样一个句子: In a countercurrent exchange system, the blood vessels carrying cooled blood from th... [查看全文]
今天我们来看这样一个句子: In the multiplicity of small-scale local egalitarian or quasi-egalitarian organizations... [查看全文]
In Europe it took a little longer, mainly because there were more small producers for whom the costs of sou... [查看全文]
Though it may be difficult to imagine from a later perspective, a strain of critical opinion in the 1920s p... [查看全文]
The answer lies apparently not in the increased energy costs of exaggerated begging——such energy costs are s... [查看全文]
Unlike formal statues that are limited to static poses of standing, sitting, and kneeling, these figures depic... [查看全文]