"We know things are really bad when the light goes out," says Dr Widder.

“我们知道当光线暗的时候，事情就不妙了(指污染严重)，”韦德博士说道。

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“The first system cost $500, 000 and was the size of a motorcycle, ” says Dr Widder.

威德接着说，“第一个这样的系统的成本是50万美元，和一个摩托车的大小相当。”

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Dr Widder is working with a bioluminescent bacterium species called Vibrio fischeri that is sensitive to a wide variety of pollutants.

威德博士目前在研究一种叫做Vibrio fischeri的荧光细菌，这各细菌对于各种污染非常敏感。

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Other scientists involved in the expedition this summer, which logged 400 hours of dives, were American oceanographer and marine biologists Edith Widder and Steve O'Shea from New Zealand.

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