In the past 12 months, the United States Patent and Trademark Office signedthree Memorandums of Understanding with its Chinese counterparts to enhancecooperation on intellectual property issues.是什么意思_In the past 12 months, the United States Patent and Trademark Office signedthree Memorandums of Understanding with its Chinese counterparts to enhancecooperation on intellectual property issues.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句