单词：polarizing prisms
偏光稜镜
单词：polarizing prisms 相关文章
Prisms 棱镜 Why can we see rainbows after rain? 我们雨后为什么能看到彩虹？ We can see rainbows after rain because droplets of moisture in the air work like a big prism. 这是因为空气中的水滴就像一个大棱镜。 So what is
发表于:2019-01-10 / 阅读(52) / 评论(0)
与美国小学生一起学英文第10册
与美国小学生一起学英文第10册
A: Hello, maam, can I help you find something? B: Yes, actually Im looking to buy a camera. A:Weve got a wide selection do you know if youd like a point-and-shoot, or something a little fancier? Are you shopping for yourself or for someone else? B: A
发表于:2019-01-20 / 阅读(39) / 评论(0)
纯正地道美语
纯正地道美语