乔·拜登是美国第46任总统，致力于推动团结与恢复国家的国际声誉。狗子里面慢慢变大

　　As the oldest president ever to be elected, President Joe Biden became the 46th President of the United States of America with his mission was to "restore the soul of America". Taking office in the shadow of Donald Trump, Biden faced a highly divided country. 　　Producers: Brian Aabech