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。
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。
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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