对外窗口 meaning in English

external gateway
the window to the outside world
window to the outside world

As a kernel connecting activities of the residents and a window to outside world , the public space of downtown center is the key issue in construction plan of the town . the development will affect the town ' s attraction and stability significantly
其中心区公共空间作为全镇居民的活动核心和对外窗口，是城镇建设的重中之重，对中小城镇的吸引力和稳定性产生重要影响。
Since the reform and opening - up of china , especially these recent years , shijiazhuang has achieved quick development in economy , and paid much attention to the opening up to the outside world , actively developing friendly co - operation relationship with all kinds of countries and areas around the world , constantly expanding the communication channels to the outside world , making every effort to build the city image as the window of hebei province , and greeting new friends with an open mind and active attitude , so as to help shijiazhuang establish friendly co - operation relationship with other countries
中国改革开放以来，特别是近几年，石家庄在经济上取得了突飞猛进发展的同时，还格外注重对外开放，积极发展与世界各国，各地区的友好合作关系，不断拓展对外交流渠道，努力树立河北省对外窗口的形象，并以积极开放的姿态关应新来朋友与石家庄市建立友好合作关系。