Now, this kid could barely tie his shoelaces, but he knew you have to cover a cut, so it doesn't become infected, and you have to care for your teeth by brushing twice a day.
这孩子刚学会系鞋带儿， 但他都知道要保护伤口以免感染， 同时还要一天刷两次牙来保护牙齿。