单词:synthetic pig iron
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The common method of closing a surgical incision is simply to stitch the patient up. There are some issues, though. Good stitching can be challenging,
发表于:2019-01-08 / 阅读(59) / 评论(0)
Scientific American(四)月
SYDNEY: All molecules are not created equal. Some have saved billions of lives, wreaked environmental havoc or made the world a more colorful place. Here's our selection of those that have changed the course of human history。 发自悉尼:分子并
发表于:2019-01-08 / 阅读(37) / 评论(0)
实用英语
A man was sued by a woman for defamation of character. She charged that he had called her a pig. The man was found guilty and fined. After the trial he asked the judge, Does this meanthat I cannot call Mrs. Johnson a pig?The judge said that was true.
发表于:2019-02-08 / 阅读(68) / 评论(0)
趣味英语