开放政策的用法和样例：
例句
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十二年前，情况开始变化，那是在我们共同努力之下促成的变化。在最近这五年里，中国实行的对外开放政策，使我们开始比过去任何时候更加了解对方。
A dozen years ago it began to change. Together, we made it change, and now in the past5 years, your policy of opening to the outside world has helped us begin to know each other better than we ever have before. -
德国的门户开放政策由于竞争国强征关税而正在受到严重的威胁。
Germany's open door policy is being threatened by tariffs imposed by their competitors.
