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前不久,有一堂生物实验课给我留下了难忘的印象。那堂课的内容是观察原生质解体。在显微镜下的一滴水里,成群结队的草履虫在无忧无虑地穿梭游动。
Not long ago, there was a biological experiment class that left me with an unforgettable impression. The lesson was to observe the disintegration of the protoplasm. In a drop of water under the microscope, the hordes of paramecium parachuted in a carefree way.