1·I mean it's interesting to speculate.
我的意思是，这是很有趣的推测。
2·He has bought himself time by refusing to speculate publicly on the cause of the blast.
他拒绝公开推测爆炸原因，为自己赢得了时间。
3·We'll never really know of course, though it's interesting to speculate.
当然，我们永远也不会真正了解，尽管推测起来很有趣。
4·The foetal development of boys may also be more sensitive to this kind of chemical assault, the authors speculate, which could explain why boys are more likely to have behavioural problems than girls.
该报告的作者推测，男孩在胎儿发育阶段可能对此类化学袭击反应更为敏感，这就可以解释为什么男孩比女孩更有可能出现行为问题。
5·Researchers speculate, for example, that black men are less likely than black women to become obese, in part because within the black community they would face a higher stigma.
例如，据研究人员推测，与黑人女性相比，黑人男性肥胖的可能性更小，部分原因是由于他们在黑人社区中可能面临更大的耻辱。