单词：high polymer waterproof material
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I have a 45, it's 45 plus High SPF, high protection, right? En, not exactly. That SPF number indicates protection from burning UVB rays, but says nothing about blocking UVA rays which can cause wrinkle, sunspots, and cancer. Rules proposed today wou
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t
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星级典句： 第一句：The shirts will be packed in waterproof material. 我们采用防水材料来包装衬衫。 A: What kind of packing do you recommend? 你们推荐何种包装方式？ B: The shirts will be packed in waterproof material. 我
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This is Scientists American sixty seconds. I am Santy Graver. Got a minute? They are called button cells, coin cells or watch batteries. By any names, this tiny round batteries pose a choking danger to kids. And if a kid succeeds in swallowing a butt
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In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月，俄罗斯最大的大学图书馆之一发生了火灾
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Japan is looking into installing toilets and emergency drinking water in buildings' lifts in case people are trapped after earthquakes. 日本考虑在大楼电梯内配装马桶，并提供紧急饮用水，以备有人在地震后被困电梯时使用
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