stipulate
verb [ T ] formal uk/ˈstɪp.jə.leɪt/ us/ˈstɪp.jə.leɪt/
规定，约定;明确说明
to say exactly how something must be or must be done
She agreed to buy the car, but stipulated racing tyres and a turbo-powered engine. 她同意买这辆车，但指明要装赛车轮胎和涡轮动力引擎。
[ + that ] The law stipulates that new cars must have seat belts for the driver and every passenger. 法律规定新车必须为驾驶员和每位乘客配备坐椅安全带。
[ + question word ] We have signed a contract which stipulates when the project must be completed. 我们已签署合同，规定了项目必须完成的时间。