1、动词①：对待；看待；处理If you treat someone or something in a particular way, you behave towards them or deal with them in that way.
动词②：治疗；医治When a doctor or nurse treats a patient or an illness, he or she tries to make the patient well again.
动词③：处理；给…上保护层
It was many years before the city began to treat its sewage.
很多年以后这个城市才开始处理污水。
动词④：请（客）；招待；款待
She was always treating him to ice cream...
她总是请他吃冰激凌。
2、名词（可数）：请客；款待
Lettie had never yet failed to return from town without some special treat for him.
莱蒂每次从城里回来都必定会给他带点特别的礼物