单词：thickened lubricant
增稠润滑剂
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Lesson 37 All About A Penny 第37课 关于便士 When I was a little boy, pennies, and halfpennies, and farthings were made of pure copper. But copper is too soft a metal to stand the rubbing which coins get. So these old pennies soon became so smoo
发表于:2019-02-07 / 阅读(130) / 评论(0)
英国学生科学读本
英国学生科学读本
I got a phone call from my husband the other day, Hey babe, can you take the car to get the oil changed please? It's overdue. As he works forty-five minutes from town, he rarely has time to run those errands back in Wenatchee, so he gets his secretar
发表于:2019-02-17 / 阅读(146) / 评论(0)
英语博客 A cup of English
英语博客 A cup of English