He has come to be recognized as an expert in the problem of overpopulation and food supply.
由于他的经验促使他终于成为了公认的人口过剩和食物供应问题的专家。
Parents are often upset when their children praise the homes of their friends and regard it as a slur on their own cooking, or cleaning, or furniture,
当家长听到孩子赞扬自己朋友的家时,总感到不安,认为这是孩子在嫌弃自家的饭菜、卫生、或家具,