While working one day, Alexander Fleming (1881-1955) sneezed onto a culture dish.
While working one day, Alexander Fleming (1881-1955) sneezed onto a culture dish.
亚历山大佛莱明有天工作时，打了喷嚏到培养皿中。
While working one day, Alexander Fleming (1881-1955) sneezed onto a culture dish.
亚历山大佛莱明有天工作时，打了喷嚏到培养皿中。