这将是中国主办的首届世博会，而当前已有超过190个国家承诺参与该盛会。
This will be the first time China has hosted a world expo, and already more than 190 nations have committed to participate.
这将是中国主办的首届世博会，而当前已有超过190个国家承诺参与该盛会。
This will be the first time China has hosted a world expo, and already more than 190 nations have committed to participate.
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