``` namespace Person{ export class Man{ name: string constructor(name: string){ this.name = name; } banZhuan(){ console.log("ban zhuan"); } } export class Woman{ name: string constructor(name: string){ this.name = name; } cook(){ console.log("cook"); } } } var man = new Person.Man("sn"); man.banZhuan(); var woman = new Person.Woman("test"); woman.cook(); ```