尤卡坦半岛上富含铱的沉积层和一个巨大的陨石坑提供了证据，证明了约6500万年前，一颗大型陨石撞击了地球。
An iridium-enriched sediment layer and a large impact crater in the Yucatn provide evidence that a large meteorite struck Earth about 65 million years ago.
墨西哥的尤卡坦半岛的一个巨大火山口的产生日期可以追溯到约65万年前，这个时期正好与大规模的物种灭绝相一致。
A huge crater off Mexico's Yucatan Peninsula is dated to about 65 million years ago, coinciding with the extinction.
卡塞拉说，世界粮食计划署目前每天为约10万人提供食物。
Casella says the World Food Program is feeding about 100,000 people a day.
第一种被确认的大型鸟则是卡岗杜亚鸟，它生活在约7000万年前的法国南部地区，这种鸟也有可能不会飞行而且长得像鸵鸟。
The first to be identified was Gargantuavis philoinos, which lived in southern France around 70 million years ago. It too may have been flightless and ostrich-like.
据瑞典卡罗林斯卡研究所的医学院校称，世界上约2400万人患有老年痴呆症，而且大多数患者正承受着老年痴呆症带来的痛苦。
About 24 million people have dementia worldwide, with the majority of them suffering from Alzheimer's, according to Sweden's Karolinska Institutet medical university.
旅游奖励信用卡的持有者每年必须在旅游上多花8600美元(约合6万元人民币)，获利才能超过使用返现卡。
8,600. That's how much more annually travel rewards credit cardholders would have to spend on travel to earn more than they could with a cash-back card.
旅游奖励信用卡的持有者每年必须在旅游上多花8600美元(约合6万元人民币)，获利才能超过使用返现卡。
8,600. That's how much more annually travel rewards credit cardholders would have to spend on travel to earn more than they could with a cash-back card.
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