英语翻译
题目
英语翻译
It shall be unlawful ...to discriminate in price between different purchasers of commodities of like grade and quality ...where the effect of such discrimination may be substantially to lessen competition or tend to create a monopoly in any line of commerce....【Provided,That nothing herein contained shall prevent differentials which make only due allowance for differences in the cost....】
我看不懂【】内的那句,前面能看懂,只用翻译【】内的句子即可,
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举一反三
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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