Wu Yifan is 50 kg.john is 52 kg.（合并为一句话）
问题描述：
Wu Yifan is 50 kg.john is 52 kg.（合并为一句话）
答
Wu Yifan is two kg less than John.
Wu Yifan is 50 kg.john is 52 kg.（合并为一句话）
Wu Yifan is two kg less than John.