通常来说，彗星来自距离遥远且冰天雪地的柯伊伯带和奥尔特星云然后掉入太阳系中的内层区域。
Normal comets fall into the inner regions of the solar system from icy reservoirs in the distant Kuiper belt and Oort cloud.
天线内层是窄带隙的纳米管，与此相反，外层的纳米管则具有较宽的带隙。
The inner layer of the antenna contains nanotubes with a small bandgap, and nanotubes in the outer layer have a higher bandgap.
当研究人员在显微镜下检查治疗皮肤，他们发现在皮肤的一个新胶原带，初级蛋白质，已经在皮肤内层形成。
When researchers examined the treated skin tissue under the microscope, they found a new band of collagen, the primary protein in skin, had formed in the inner layers of skin.
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