Within a decade, people began actually marking OK on documents and using OK on the telegraph to signal that all was well.
在10年内，人们开始真正把OK写入文件，并且在电报用OK表示一切平安。
Within a decade, people began actually marking OK on documents and using OK on the telegraph to signal that all was well.
在10年内，人们开始真正把OK写入文件，并且在电报用OK表示一切平安。
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