图一：Photo taken in Arlington, Virginia, the United States on Oct. 22, 2020 shows C-SPAN live stream of U.S. President Donald Trump (L) and his Democratic challenger Joe Biden attending their final debate in the 2020 presidential race.

　　The second and final round of U.S. presidential debate between incumbent Donald Trump and Democratic nominee Joe Biden kicked off Thursday night, offering voters the last chance before Election Day to see the candidates facing each other head-on and making their cases for the presidency.

　　这张10月22日在美国弗吉尼亚州阿灵顿拍摄的视频画面显示，美国总统特朗普（左）与民主党总统候选人拜登在田纳西州纳什维尔市参加最后一场总统候选人电视辩论。