### Chinese: 此次峰会是拜登兑现其竞选承诺的行动。
### English: The summit is Biden's act of delivering on his campaign promises.
### Errors: There is a major error of incorrect translation is missing content from the correct translation at "The summit is Biden's act of delivering on his campaign promises.". There is a major error of incorrect translation has stylistic problems at "The summit is Biden's act of delivering on his campaign promises.".

### Improved English: The summit was the action that Biden took to fulfill his promise made during the campaign.