translation.en: And my favorite example of that occurred beginning in 1976, that the bacteria causing Legionnaires disease had always been present in natural waters, but it was the precise temperature of the water in heating, ventilating and air conditioning systems that raised the right temperature for the maximum reproduction of Legionella bacillus.
translation.zh: 我最喜欢的案例 发生在1976年 军团病致病病菌 被研究发现 一直存在与天然水中 但是供热，通风和空气流通条件下 水的温度 能升高到 有利于军团杆菌繁殖的 最大化的温度