五、請將下列英文譯成中文：（20 分） This sewage treatment plant consists of a tank with three main compartments: aeration compartment, settling tank（clarification）compartment, chlorination and discharge compartment. Chlorination and discharge tank water from the clarification section is mixed with disinfectants（sodium hypochlorite）and is sterilized. The compartment has float operated switches which activate the effluent pump discharge when the high level is reached and stop the pump when the compartment is nearly empty. Chemical dosing is by tablets added to the basket in the chamber and these dissolve slowly when in contact with the water in the chamber as the water level rises.