What you're looking at on this slide is just a person from my lab holding a flask of a liquid culture of a bacterium, a harmless beautiful bacterium that comes from the ocean, named Vibrio fischeri.
你们在这张幻灯看到的，是我实验室的一个工作人员 握着一瓶装满这种细菌的培养液， 这是一种来自海洋的，美丽而且无害的细菌： "费氏弧菌".