单词：reverse osmosis membrane
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This is Scientific Americans 60 - Second Science, I am Karen Hopkin, this will just take a minute. After a long bath, your fingers and toes come out all wrinkly. You may have wondered why your skin would go and do such a thing. Now a study shows that
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Osmosis 渗透作用 When you water plants or flowers, do you pour water on their leaves? 你给植物或花浇水时，会把水倒在它们的叶子上吗？ No, you don't. You may pour water on the ground. 不，你不会。你可能把水倒在地上
与美国小学生一起学英文第12册
倾听音乐：Forward And Reverse 虽是英文，但音乐无国界。它诉的是情，听起来却冷冷清清，仿佛清晨起来照铜镜，发现自己满面愁容。思念已满溢，恍惚间想起昨夜小寐，忽疑君至，却是琉璃火，
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Researchers in Sydney are leading a new international effort to make desalination more environmentally friendly. Current techniques tend to use excessive amounts of energy or are heavily reliant on chemicals. The University of Technology in Sydney is
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迷你对话： A: Mary is really a diligent girl. 玛丽是一个勤奋的女孩。 B: What do you mean? 为什么这么说？ A: She learns to speak Latin by osmosis within three months. 她废寝忘食地在三个月内学会了拉丁语。 B: She
迷你对话学地道口语
Leave it on the shelf too long and honey begins to crystallize. Heating the honey returns it to its original condition, but if you add water, you could ruin the honey completely. Thats because honey, which is a preservative in its original state, fer
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