interface ILoan { 

   interest:number 

} 

class AgriLoan implements ILoan { 

   interest:number 

   rebate:number 

   constructor(interest:number,rebate:number) { 

      this.interest = interest 

      this.rebate = rebate 

   } 

} 

var obj = new AgriLoan(10,1) 

console.log("利润为 : "+obj.interest+"，抽成为 : "+obj.rebate )