请高手翻译After a hectic day in the office with her mind turing like a machine ,Jack watched TV for two h
题目
请高手翻译After a hectic day in the office with her mind turing like a machine ,Jack watched TV for two hours with a cup of coffee in front
答案
杰克的大脑像机器一样运转着,在办公室里经过了忙乱的一天后,他面前放上一杯咖啡,看了2个小时的电视.
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已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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