And it was a mistake. It set us back.
可是这是一个错误，一下倒退了回去。
It has set us back in so many respects that I'm not sure how long it will take for us to catch up.
我们在很多方面都被延误了，不知道需要多久才能赶上。
It is important for the us to negotiate an agreement it can join, because another agreement that did not involve the United States would set back efforts to protect the climate.
重要的是美国通过谈判达成一个它能加入的协议，因为再来一个与美国无关的协议将会挫败保护气候的努力。
All of us consider it better to set free the wild elephant back to the jungle.
我们都认为把野生大象放回丛林比较好。
All of us consider it better to set free the wild elephant back to the jungle.
我们都认为把野生大象放回丛林比较好。
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