单词：orthoesters
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[00:05.12]American researchers say a new, low-fat substitute for butter could reduce the risk of heart attack and stroke for millions of people. [00:17.76]The new food product is made from vegetable oil with added substances called sterol esters. [00
发表于:2018-12-26 / 阅读(75) / 评论(0)
美国英语听力80篇
美国英语听力80篇