Sugar also causes hyperactivity , crankiness , and difficulty concentrating in children as any parent can attest to !

任何父母都能证明，糖能导致孩子过度活跃、偏执、注意力难集中。

But the crankiness back home could increase in coming days as the olympic games heads into events such as track and field , where china hasn 't traditionally been strong .

但随着伦敦奥运会迎来田径等中国传统弱项赛事，未来几天中国人的偏执情绪可能会有所增加。