Many have speculated over Mozart's death. He was buried just three days after he died in 1791, and no autopsy was ever performed.

莫扎特于1791年逝世，死后三天即入土，未做解剖，很多人对于他的死因都做过揣测。

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Psychologists have speculated about the possible reasons for this increase in both anxiety and depression over the last fifty years.

心理学家纷纷猜测在过去的五十多年里，有关忧虑，抑郁症增加的可能原因。

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The team speculated that, over time, cichlid eyes adapted to either the bluish or the reddish ambient light, depending on where they lived.

研究小组推测，随着时间的过去，丽鱼科鱼的眼睛适应于周围浅蓝色或者淡红色的光线，随它们游到什么位置而定。

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Commentators have speculated over whether Buffett would add a third, fixed income-focused portfolio manager to the mix.

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As for my co-worker, he quickly gobbled down his sandwich in the break room while we speculated over where they might have come from.

CNN: Chicken, with a side of politics

It was an anticlimactic end to a case whose decision was so long delayed that some speculated the justices were deadlocked over how far to rein in what some see as an out-of-control patent process.

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