单词：Gafac surfactant
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In countries around the world, hundreds of thousands of poor people face daily hazards to earn meager livings by scavenging for recyclable goods. In Cambodia, hundreds of scavenger families find their lives changing - they will lose their homes and
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AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster: Anu Garg, creator of the A.Word.A.Day Web site and author of a new book called Another Word A Day: An All-New Romp Through Some of the Most Unusual and Intriguing Words in English
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今天我们要讲的习惯用语里都有一个主要的单词：scratch。很多人都知道scratch这个词的意思是抓、或者刨刮表面。你要是给蚊子叮了一口，你就会这样做：scratch your skin with your fingernails。就是你
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