美国总统如何选出来How is the US president elected? ☻选举人elector; ☻选举人团electoral college; ☻直接投票popular vote; ☻民意调查opinion polls; ☻支持率approval rating; ☻选区electoral district; ☻胜者全得制度the winner-takes-all System; 美国总统选举实行间接选举制……
