Heather and her husband are very busy because they are never off duty.
希瑟和她丈夫很忙，因为他们从不下班。
The idea never took off because it was prohibitively expensive.
这一想法没有实现，因为它造价实在昂贵。
But maglev has never really taken off, mainly because of the expense.
磁悬浮从未真正开始，主要是由于成本。
I have no feelings, because I never lift off at this airfield.
唯有内心强大，胜过一切繁华。
I have no feelings, because I never lift off at this airfield.
唯有内心强大，胜过一切繁华。
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