The machines will be made of the best materials and the stipulations of the contract be strictly observed.
机器将用最好的材料生产,合同的规定也将得以严格履行。
who is which depending on whether the customer's account is in credit or is overdrawn.
究竟谁是债务人谁是债权人,要看储户的账户是有结余还是透支。