We think that an increase in the length of the dry season sometime after 27 million years ago caused the loss of those plant groups on the Ethiopian Plateau.
我们认为2700万年前之后某个时间旱季长度的增加导致了埃塞俄比亚高原上那些植物群落的消失。
The loss of Daniel Pearl ... reminded us of how valuable a free press is, and it reminded us that there are those who would go to any length in order to silence journalists around the world.
丹尼尔·珀尔的去世提醒我们新闻自由多么可贵，也让我们想起，有人会不择手段地让全世界的新闻从业者噤声。
However, he added: "This is highly sensitive to small changes in the proportionate loss rate because the amount of assets is so big and the length of time that the assets are covered."
然而，他补充道：“这对于成比例的损失率中小小的变化都高度敏感，因为这些有毒资产的数目太大，并且被掩盖的时间太长。”
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