...-provider')
//2.new一个web3实例
let web3 = new Web3()
//3.设置metamask Ropsten-network的助记住词，表明花谁的钱
let terms = 'truly state fruit rug decide riot shy lake apple orphan october dinosaur'
//3.设置测试网络 infura
let netIp = 'https://ropsten.infura.io/v3/...
... with your RINKEBY account private key
// To export your private key from Metamask, open Metamask and
// go to Account Details > Export Private Key
// Be aware of NEVER putting real Ether into testing accounts
RINKEBY_PRIVATE_KEY="add-the-rinkeby-private-key-here"
```
- 让我们把合同部...