The story of online grocer FreshDirect is something of a chicken-or-egg riddle.
网上食杂商新鲜直达的故事有点像鸡与蛋的谜团。His whereabouts were a mystery for the next nine years, despite the bounty on his head.
接下来的九年里，尽管有高额赏金，但拉登的藏身之处始终是个谜团。I stared at the empty frames with a peculiar feeling that some mystery was about to be solved.
我望着空荡荡的画框，感觉到一些谜团正要被解开。So far no one has given us any explanation about this and it is still a mystery to me.
至今没有人向我们做任何解释，至今在我的脑子里还是一个谜团。Since the mystery in a story is the articulated mystery of man, history began to lose its human content.
既然故事中的神秘谜团是关于人的，历史于是开始失去它的关于人的内容。The gold plate remains the biggest mystery of the three; it has not been analyzed and a photo shows only half of it.
黄金碟盘仍然是三个最大的谜团，它没有进行照片分析，因为只有它的一半。Their experiments solved one of the great mysteries of biology, one scientists had wrestled with since the dawn of genetics.
他们的实验解决了生物学的一大谜团，这个谜团是科学家们自遗传学诞生以来一直竭力寻求解答的。Let me describe it, at its extreme point, by one of the enigmas that the reference to nature presents us with.
自然界的现象带给我们许多谜团，让我用其中一个玄妙至极的谜团描述这个凝视。This seems to be a real conundrum, even for Austrians and other libertarians.
这看起来确实是一个谜团，特别是对于包括奥地利学派在内的自由主义者来说。