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我的资历很老,在生物世界已存在了几亿年;我的身材很细小,人类无法用肉眼看见我,只有在几十万倍放大的显微镜下才能一睹我的芳容。1898年荷兰细菌学家贝杰
My qualifications are very old and have existed in the biological world for hundreds of millions of years; my body is so small that human beings can not see me with the naked eye, and I can only see my magnificence under the magnifying microscope hundreds of thousands of times. 1898 Dutch Bacteriologist Berger