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,

提问时间：2020-10-30

答案