For China’s leader, Xi Jinping, one important goal of his meeting with President Trump this week may be persuading him to keep delaying $14 billion in proposed U.S. arms sales to Taiwan. 对于中国领导人习近平来说，本周与特朗普总统会晤的一个重要目标可能是说服他继续推迟拟议中对台湾的140亿美元军售。 China has long…