Legionnaires disease can be prevented by proper chlorination (treatment of water with chlorine) and sealing of water supplies.
军团病是可以预防的，由适当的加氯和密封水的供应。
Legionnaires disease can be prevented by proper chlorination (treatment of water with chlorine) and sealing of water supplies.
军团病是可以预防的，由适当的加氯和密封水的供应。
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