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人类到一定年龄停止长新牙。不过美国研究人员研究发现,一种人体基因可能帮助人类根据需要生长新牙,使完全告别假牙成为可能。
Human to a certain age to stop long new teeth. However, a study by American researchers found that a human gene may help humans grow new teeth according to their needs, making it possible to completely bid farewell to dentures.