President Trump has asked Xi Jinping, the leader of China, whether he would like to buy American weapons, David Perdue, the American ambassador to China, said in a television interview on Sunday. 美国驻华大使庞德伟(David Perdue)在周日的电视采访中表示，特朗普总统曾询问中国领导人习近平是否愿意购买美国武器。…