To prevent that from happening, American Secretary of State John Hay proposed what became known as the "Open Door" policy.
为了防止这些的发生，美国国务卿约翰·海伊提出了后来所谓的“门户开放”政策。
To prevent that from happening, American Secretary of State John Hay proposed what became known as the "Open Door" policy.
为了防止这些的发生，美国国务卿约翰·海伊提出了后来所谓的“门户开放”政策。
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