在线英语听力室

【英语时差8,16】湿沙为什么黏在一起？（上）

时间：2016-03-24 08:04:04

搜索关注在线英语听力室公众号：tingroom，领取免费英语资料大礼包。

（单词翻译）

Your five-year-old knows it: When it comes to building sand castles at the beach, wet sand is much better than dry. If you fill your bucket with dry sand and turn it over, you’re likely to end up with a tumbled ruin, not a proud tower or turret1. Any junior civil engineer will tell you to use damp sand from the water’s edge to construct proper parapets. We'll learn why wet sand sticks on today's Moment Of Science. Fortunately for beach-goers everywhere, a group of physicists2 at Notre Dame3 tackled this sticky problem. They discovered that wet sand sticks together for exactly the same reason water beads4 up on wax paper: a phenomenon called surface tension.

分享到：


点击收听单词发音收听单词发音  

1 turret blPww     
n.塔楼，角塔
参考例句：
  • This ancient turret has attracted many visitors.这座古老的塔楼吸引了很多游客。
  • The soldier scaled the wall of the fortress by turret.士兵通过塔楼攀登上了要塞的城墙。
2 physicists 18316b43c980524885c1a898ed1528b1     
物理学家( physicist的名词复数 )
参考例句：
  • For many particle physicists, however, it was a year of frustration. 对于许多粒子物理学家来说，这是受挫折的一年。 来自英汉非文学 - 科技
  • Physicists seek rules or patterns to provide a framework. 物理学家寻求用法则或图式来构成一个框架。
3 dame dvGzR0     
n.女士
参考例句：
  • The dame tell of her experience as a wife and mother.这位年长妇女讲了她作妻子和母亲的经验。
  • If you stick around,you'll have to marry that dame.如果再逗留多一会，你就要跟那个夫人结婚。
4 beads 894701f6859a9d5c3c045fd6f355dbf5     
n.（空心）小珠子( bead的名词复数 )；水珠；珠子项链
参考例句：
  • a necklace of wooden beads 一条木珠项链
  • Beads of perspiration stood out on his forehead. 他的前额上挂着汗珠。

本文本内容来源于互联网抓取和网友提交，仅供参考，部分栏目没有内容，如果您有更合适的内容，欢迎 点击提交 分享给大家。