A new hair-growing drug is being sold for three times the price, per milligram, as the drug's maker charges for another product with the same active ingredient.
A new hair-growing drug is being sold for three times the price, per milligram, as the drug’s maker charges for another product with the same active ingredient.
将 per milligram 先取掉。句子就变成了:A new hair-growing drug is being sold for three times the price of what the drug's maker charges for another product with the same active ingredient. 应该明白了吧!