Not only did mammals sweep across the planet after K-T, but sharks expanded across the seas, explained American Museum of Natural History vertebrate paleontologist Jack Conrad.
美国自然历史博物馆脊椎古生物学家Jack Conrad解释说，k - T大灭绝之后，不但哺乳动物开始主宰地球，鲨鱼也开始在海洋中扩张。
Jack, your T-shirt is so beautiful, could you tell me where you bought it?
杰克，你的 T 恤真漂亮，能告诉我你在哪儿买的吗？
Their first performance doesn ' t go quite to plan , but daisy , jack and sprat , the cat discover unexpected talents.
他们的第一次表演没能按计划进行，但是戴西、杰克和猫咪小不点儿却发现了自己意想不到的天赋！
Jack will sing at the party, but I know John won 't (sing at the party).
杰克将在晚会上唱歌，但我知道约翰不会在晚会上唱歌。
Jack: Computers are your life, aren "t they?"
杰克：电脑就是你的生命，是吗？
A T-shaped software developer is a jack-of-all-trades, but a master of one.
T形软件开发者是万事通，但是却精于某一项技能。
Jack is a man battling his eternal struggle with cannibalism. There are very few reasons to live when you can "t die."
杰克是一个男人与他永恒的斗争与同类相食。很少有理由活当你不能死。
Jack is a man battling his eternal struggle with cannibalism. There are very few reasons to live when you can "t die."
杰克是一个男人与他永恒的斗争与同类相食。很少有理由活当你不能死。
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