这会损伤牙齿，让人头疼并使颌骨受损。
It can damage the teeth, give you headaches and make your jaw hurt.
宾夕法尼亚州立大学的研究人员使用大鼠作为动物模型，研究饮食和大脑寿命的关系。研究结果表明：使大鼠一生中的热量摄入减少50%，能够延缓保护大脑免受损伤。
Researchers at Penn State University were able to ward off brain deterioration in rats — when they cut the rodents's lifetime caloric intake by 50 percent.
这一过程将DNA链向上拖入头壳中，从而保护其不受损伤，使病毒能够存活以及进行繁殖。
The process draws the DNA strand upwards into the capsid where it is protected from damage, enabling the virus to survive and reproduce.
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