只用一本书提高英语听力能力!重温经典名著双语阅读小编推荐:跟着纪录片学英语不背单词和语法,轻松学英语
返回列表 回复 发帖

[科学美国人60秒] 【整理】SSS 2008-02-04

提高英语听力能力 找对方法很重要!
SSS 2008-02-04

user posted image


Salad Dressing Science Mixes Up Researchers


Researchers studying oil-water mixtures in the hopes of learning how to keep salad dressing mixed found that water droplets merge as they're being pulled apart, not as they're being pushed together. Chelsea Wald reports.



【电信用户1】在线播放和下载

Download mp3


【电信用户2】下载
Download mp3

【网通/教育网用户】在线播放和下载


Download mp3
[right][snapback]682039[/snapback][/right]

进入上一期SSS

Standard版听写规则(新手必读)

版主提示:
一、若是自己的听写稿, 请发帖时标注'Homework'.
二、若是改稿, 请发帖时标注'on 某某人'并在修改处标红.
三、为了达到最快的下载速度,推荐使用迅雷高速下载本站音频/视频材料.


【整理】SSS 2008-02-04【整理人】ZPC224
Transcript


This is Scientific Americans' 60-Second Science. I'm Chelsea Wald. Got a minute?

Vinaigrette dressing: when you shake it little vinegar droplets scatter through the oil, but when you put it down, the droplets merge and the dressing separates. That's probably not a big inconvenience to you, but it is to industries that use lots of vinaigrette-like mixtures. So to study this unmixing, French researchers planned to float water droplets one at a time through a channel of flowing oil. The channel widened in the middle so the oil would slow down and bump the water droplets together. Then the passage narrowed again so the oil would speed up and pull the droplets apart. The researchers expected that the droplets would merge when they bumped together. But that's not what happened. In fact it was when the droplets started to pull apart from each other that they suddenly mixed. In Physical Review Letters, the researchers say that the pulling apart may make the pressure between the droplets fall. That would make the droplets burst open and then they could merge into one big water droplet. What the researchers don't say is whether this finding could lead to a true breakthrough: stay-mixed salad dressing.

Thanks for the minute for Scientific Americans' 60-Second Science. I'm Chelsea Wald.

==========
Vocabulary:
Vinaigrette: One of the four 'mother sauces,' vinaigrette is a basic oil-and-vinegar combination, generally used to dress salad greens and other cold vegetable, meat or fish dishes. In its simplest form, vinaigrette consists of oil, vinegar (usually 3 parts oil to 1 part vinegar), salt and pepper. More elaborate variations can include any of various ingredients such as spices, herbs, shallots, onions, mustard, etc. 一种油和醋组成的调料
burst open: v. 猛然打开
salad dressing: A sauce, such as one made of mayonnaise or of oil and vinegar, that is served on salad. 生菜食品之调味汁,色拉味调料


点!尔何如?鼓瑟希,铿尔,舍瑟而作,对曰:异乎三子者之撰。子曰:何伤乎?亦各言其志也。曰:莫春者,春服既成,冠者五六人,童子六七人,浴乎沂,风乎舞雩,咏而归。夫子喟然叹曰:吾与点也。
返回列表