problem
牛津词典对它的解释是
thing that is difficult to deal with or understand 难以处理的事情; 难以了解的事物; 难题:How do you cope with the problem of poor vision?怎样解决视力不好这一难题呢?
problem
牛津词典对它的解释是
thing that is difficult to deal with or understand 难以处理的事情; 难以了解的事物; 难题:How do you cope with the problem of poor vision?怎样解决视力不好这一难题呢?