单词：greasy water
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Lesson Five Pre-class Work Read the text a third time. Learn the new words and expressions listed below. Glossary alcohol n. the pure colourless liquid present in wine or beer that can make one drunk,
现代大学英语精读
Tiny Bubbles Turn Water Into Effective Cleaning Tool 小气泡把水变成有效的清洁工具 While a stream of ordinary cold water may clean some dirt it is not considered an effective cleaning agent. But when two inventors at the University of So
VOA标准英语2015年(十一月)
小小气泡学问大 Under ultraviolet light greasy residue on human hands becomes visible, but trying to rinse it off with ordinary cold water is next to impossible. 在紫外线的照射下，光油油的残留在我们的手上清晰可见，但要
VOA标准英语2016年(一月)
小小泡沫把普通水变成强力清洁剂 While a stream of ordinary cold water may clean some dirt it is not considered an effective cleaning agent. But when two inventors at the University of Southampton added a little ultrasound the water beca
VOA双语新闻 2015年11月
This is Scientific Americans 60-Second Science. I am Synthia Graber. Got a minute? Wander where and when the next major river flood would had, just look up to the satellites. Conventional estimates a river volumes come from rain fall of course and fr
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Wonder if you are washing your hair the right way? Washing hair isnt a hard process you just wet, shampoo, rinse your hair, apply conditioner or hair mask and then again rinse, and thats it. Nothing complicated, but washing your hair properly can ser
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