(of a policy, system, principle, etc.政策、制度、原则等)allowing people or goods freedom to come into a country; allowing people to go to a place or get information without controls or limits门户开放的；自由往来的
the country’s open-door policy for refugees这个国家对难民的开放政策
You are welcome to visit the school at any time; we have an open-door policy.欢迎您随时访问学校。我们有一个开放政策。
a policy within a company or other organization designed to allow people to freely communicate with the people in charge（公司或机构中下属与主管）直接沟通的；政策开明的
We operate an open-door policy here, and are always willing to listen to our students' suggestions.我们这里实行 “开门政策”，愿意随时听取学生的建议。🔊🔊
open door (to something/somebody)a situation that allows something to happen, or that allows people to go to a place or get information without controls or limits门户开放；自由往来
The government's policy is an open door to disaster.政府的政策为灾难敞开了大门。🔊🔊
An insecure computer system is an open door to criminals.不安全的电脑系统给罪犯提供了可乘之机。🔊🔊