跟往常一样，哥伦比亚号靠自动驾驶仪飞行，尽管它尾迹中继续燃烧着光焰，里面的宇航员却丝毫不知他们已身陷险境。
The Columbia was flying on autopilot, as is usual, and though it continued to lay flares in its wake, the astronauts aboard remained blissfully unaware of the trouble they were in.
他们不知何去何从。
他们不知要去哪里。
谁也不知道他们在他心中被如何看待，他这个人绝对难以琢磨。
No one knows where they stand with him; he is utterly unpredictable.
他们永远不知道他们要去哪里，也不会有条不紊地走路。
They never know where they are going, and do not walk in an orderly manner.
我不知道他们要把我们带到哪里去。
他们被保护得很好，不知道贫穷的滋味。
他们两个人都不知道这具尸体被埋了多久了。
Neither of them had any idea how long the body had been entombed.
他们不知道捉他们的人要对他们做什么。
“我不知道他们为什么离开，”他悲伤地说。
盯住这些家伙，你永远不知道他们会想出什么来。
Keep your eye on these jokers, you never know what they will come up with.
我搞不懂了。我不知道他们怎么比我们来得还早。
我不知道他们到达时需要什么—我们只有见机行事了。
I don't know what they'll want when they arrive—we'll have to play it by ear.
她经常想着她的家人；她也许永远都不知道他们怎么样了。
She thought constantly about her family; she might never know what had become of them.
他们不知道自己的权利。
他们似乎不知道正在发生的事。
他们不知道能够指望从民主党人那里得到多少支持。
What they did not know was how much support they could count on from Democrats.
假如我不知道某个词，我请他们替我拼写出来。
警方不知道贩毒集团就在他们的眼皮底下运作。
The police didn't know the drugs ring was operating right under their noses.
他们并不知道即将降临到他们头上的厄运。
不知道他们在该岛居民中有多少民众支持。
It is unclear how much popular support they have among the island's population.
他们神不知鬼不觉地溜走了。
我不知道他们在抗议什么。
他们太好了，花了两个小时来帮助我，我甚至不知道他们的名字。
They were so kind to spend two hours helping me and I didn't even know their names.
维勒兹和其他北美的消防员也做过类似的报告，他们永远不知道他们的演讲拯救了多少人的生命。
Velez and other fire fighters throughout North America, who give similar presentations, will never know how many lives they save through their talks.
我不知道他们是如何熬过这些寒冷的冬天的。
他们不知道。
我不知道他们在帮助别人时是否更有积极性。
I don't know if they're that much more motivated to help people.
我不知道他们在帮助别人时是否更有积极性。
I don't know if they're that much more motivated to help people.
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