A single heatwave cannot be said to have been caused by global climate change; but what is known about climate change says such heatwaves are now more probable than they were.
据说一股独无仅有的热浪不是因全球气候变化引起的；但是有关目前气候变化的情况得知：现在比过去更可能出现这类热浪。
Why should they ally with whites who are just now experiencing the hardships that blacks have known for generations?
为什么黑人要联合初体验艰辛的白人，而黑人世代都承受着这样的苦难。
The Oklahoma City Thunder, as they are now known, are currently thriving as one of the NBAâ s best young teams, while Seattle fans are left contemplating what could have been.
现在雷霆队成为了NBA最好的年轻队伍之一，留下西雅图的粉丝空想本来可以发生的事。
Now, some of these former captives have learned to express their feelings through art. They worked with an American artist known for paintings that deal mainly with loss and remembrance.
现在，一些以前被俘过的人已经学会通过艺术作品来表达他们的感受，他们与一位美国著名艺术家一起工作，制作以讲述失落和记忆为主的绘画作品。
While they have known that stars are born there, they weren't able to see the stars forming until now.
虽然他们知道有恒星在那里诞生，但一直无法观测到。
Researchers have long known that whales suffer blisters on their backs. However the reason why they have lesions has been a mystery - until now.
近年来，研究者发现抹香鲸的背部都有或多或少的“水疱”现象，科学家研究发现这些来自背部的水疱是被“晒伤”后留下的伤痕。
Though researchers have known about the KELT system for a while now, they used to think it contained only a single star.
研究人员发现KELT系统已经有一段时间了，但之前人们认为它仅含一颗恒星。之后，随着进一步的研究，他们将其晋升为双星系统。
Though researchers have known about the KELT system for a while now, they used to think it contained only a single star.
研究人员发现KELT系统已经有一段时间了，但之前人们认为它仅含一颗恒星。之后，随着进一步的研究，他们将其晋升为双星系统。
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