我们的太阳系中的行星不是那些可以通过理论预测其组成的普通行星，而是独特的个体，它们的化学和构造特征都是由它们创造的。
Instead of normal planets whose composition could be predicted by theory, the planets populating our solar system are unique individuals whose chemical and tectonic identities were create.
这第一次的讲座将聚焦于普通劳动市场静态学，包括理论和实践。
The focus of this first lecture will be on ordinary labor market dynamics, both in theory and in practice.
事实说话：可悲的是这个理论有非常多的拥趸，他们认为普通的感冒无关大碍，因为只要好好休息并自我放松就能万事大吉。
The facts: Sadly this is believed by many people, and though it certainly can't hurt for the common cold, since rest and relaxation are the best things for it after all.
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