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主题：2020年美国总统选举
Joe Biden Wins 2020 U.S. Presidential Election

Joe Biden has been elected as the 46th president of the United States, defeating incumbent Donald Trump. 
After several days of vote counting in battleground states, Biden surpassed the necessary 270 electoral votes to win the election. 
Biden's running mate, Kamala Harris, will become the first woman and person of color to hold the office of Vice President.

The election was marked by high voter turnout and a record number of mail-in ballots due to the ongoing COVID-19 pandemic. 
Both candidates focused heavily on the handling of the pandemic, racial justice, and the economy in their campaigns.

Trump has refused to concede, alleging voter fraud and filing lawsuits in several states. However, his claims have been widely disputed and several legal challenges have already been dismissed by courts.

Biden's victory has been celebrated by many Americans and greeted with congratulations from leaders around the world. 
He faces the challenge of unifying a divided nation and addressing the ongoing COVID-19 crisis, as well as implementing his policy agenda.

The 2020 U.S. presidential election will be remembered as a historic and contentious chapter in American history.