Many business people turn off their pagers and cell phones during their leisure time.
许多商人在他们的休息时间里都把传呼机和移动电话关掉。
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。