Give the green light to

中国政府周五公布了支持房地产业的一些列政策，请看本报昨日的报道：

China announced some of its strongest moves yet to revive its property sector, encouraging local governments to buy real estate and relaxing mortgage rules as it seeks to boost a recovery in the world’s second-largest economy.

Beijing gave the green light to local authorities to buy some residential projects and turn them into public housing.

报道中的give the green light to就是“开绿灯、允许”。例如：

The government has given the green light to a multi-billion-dollar road building project.

政府批准了一项耗资数十亿美元的公路建设项目。