大家都搜：
谜
难以理解的事物
令人费解的情况
难题
1、head head───头颅
2、head shot───暴头；拍摄头部
3、beef head───牛肉头
4、crotch scratcher───裆部刮刀
5、head next───下一个
6、soft head───n.无主见的人
7、head bowed───低着头
8、head home───回家
9、head───n.头；头痛；上端；领袖，首领；最前的部分；理解力；vi.出发；成头状物；船驶往；adj.头的；主要的；在顶端的；n. (Head)（英）黑德（人名）；vt.前进；用头顶；作为……的首领；站在…的前头；给……加标题
1、previous chapter, Interrogation Techniques is a head-scratcher.───前一章一样，“讯问技术”很令人头疼。
2、Two countries, both huge in technology, with somewhat opposingproblems. This became my curious head scratcher, and I wanted to learnmore.───两个拥有大量科技的国家，面对逆向问题，令我摸不着头脑，更想了解更多。
3、Like the previous chapter, "Interrogation Techniques" is a head-scratcher.───同前一章一样，“讯问技术”很令人头疼。
4、Yes, I know he's a head scratcher, Everybody hates him. But he insists, You know.───是的，我知道他很讨厌，谁都烦他，可他要来。
5、In fact, the illusion of time may be created by the brain itself, which is at least as much of a head-scratcher as the plot of Inception.───实际上，虽然时间幻觉是大脑自身产生的，但正如《盗梦空间》的情节一样，这种幻觉也是个令科学家感到费解的难题。