What voters think about Joe Biden and the age issue 美国选民这样看待乔•拜登和年龄问题
How much will perceptions of the capacities of the elderly president and his not-much-younger rival influence the outcome of elections? 杨蓓蓓：81岁的拜登和77岁的特朗普是美国有史以来年龄最大的总统候选人，选民对他们年龄的看法会在多大程度上影响选举结果？