Collecting matchsticks was fun, until that fateful day one of them caught alight.
收集火柴是一种乐趣,除非一天其中一根火柴不幸燃烧起来。
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,只是在现代对于科学史家来说,伽利略才变成一个新的难题。