Then there are the bacteria—familiar as agents of disease, but actually ecologically crucial.
接下来是细菌域，细菌作为传染疾病的媒介为人们所熟悉，但是实际上它们对于生态环境至关重要。
Bacteria are often a cause of disease.
细菌常常引起疾病。
Flood waters carry disease bacteria.
洪水中有致病细菌。
So I doubt that this is a virus; this disease is caused by bacteria.
因此，我怀疑这是一种病毒，这种疾病是由细菌引起的。
Bacteria would like to take this opportunity to enter the body, triggering the disease.
细菌便借此机会进入人体，引发疾病。
To decrease bacteria on the skin that could cause disease.
为了减少对皮肤，可能导致疾病的细菌。
They can also out-compete "bad" bacteria that may cause disease.
它们也竞争性抑制引起疾病的“坏”细菌。
They are also conditional pathogenic. bacteria and can cause disease through their toxin, e. g. toxaemia.
该菌感染主要由毒素导致的毒血症致病。
Fortunately, most bacteria do not cause disease, and many are useful.
值得庆幸的是，大部分细菌不致病，许多种是有用的。
Fortunately, most bacteria do not cause disease, and many are useful.
值得庆幸的是，大部分细菌不致病，许多种是有用的。
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