细菌源追踪技术的日臻完善,科学家估计,部分地区20%到30%的细菌是由狗狗造成的。
Now that bacteria-tracking methods have gotten better, scientists estimate that in some areas, 20 to 30 percent of the bacteria in a stream comes from dogs.
细菌源追踪技术的日臻完善,科学家估计,部分地区20%到30%的细菌是由狗狗造成的。
Now that bacteria-tracking methods have gotten better, scientists estimate that in some areas, 20 to 30 percent of the bacteria in a stream comes from dogs.
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