problem child的用法和样例：
例句
- But, in contrast, it is only in modern times that Galileo has become a problem child for historians of science.
但是相比之下，对于科学史家来说，伽利略只是在现代才变成了一个成问题的孩子了。
词汇搭配
- problem child 难管教的儿童...
problem child的相关资料：
临近单词
problem box
problem
problem-solving heuristics
problem of old age residence
problem of food and clothing
problem of peasant' s income
problem-solving strategies
problem - solution pattern
problem of two fixed centers
problem being confronted with
problem-solving methodology
problem specification laguage
