题目：
翻译.
1.经过漫长的谈判终于达成了协议。(make a deal)
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2．那一天，所有的市民都参与了植树活动。(involve)
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3．无论多么先进，电脑也只能做人类让它去做的事情。
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4．如果我们的右手忙着和别人打招呼，就不可能握有武器了。(be busy doing)
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5．If the same two persons meet again by chance，even years later，they pick up the
friendship where it left off and are delighted.
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答案：
1．A deal was made after the long negotiation.
2．All the citizens were involved in planting trees that day.
3．However/No matter how advanced it is the computer can just do what it is told to.
4．If our right hand is busy greeting someone，it cannot be holding a weapon.
5．如果两个人又偶然相遇，哪怕是在数年以后，他们中断的友谊仍可重新开始，
而且两人都会为此感到极为高兴。
答案不唯一.
