Industrial effluent often causes a problem to people's health.工业废水常常危害人们的健康.Effluent from the sedimentation tank is dosed with disinfectant to kill any harmful organisms.沉降池中的废水中加入了消毒剂，以消灭所有有害微生物。Dangerous effluent ...
Dangerous effluent from some chemical plants is being poured into the river through the town.几家化学工厂排出的有害废水正流入通过我们市镇的河里.Effluent from the sedimentation tank is dosed with disinfectant to kill any harmful organisms...沉降池中的...