60秒科学:气泡也繁殖,大泡变小泡(有声)
Bubbles. Big ones entertain children and tiny ones tickle 1 champagne 2 aficionados 3. Even witches appreciate what they bring to a boiling cauldron. If you, too, are a bubble lover, then you’ll enjoy the latest bubble study published in the journal Nature. In it, scientists show that a bursting bubble can leave in its wake a ring of smaller bubbles, a finding that could have implications for disease transmission.
Bubbles are engaging because of their effervescence. Here one minute and then [popping sound] they’re gone. Or so we thought. What the new study shows, however, is that when bubbles break open on the surface of a liquid or solid, they don’t simply disappear.
Using high-speed videography, scientists observed surface bubbles as they burst. And they saw that when the skin of the bubble ruptures 4, it retracts 5. As this film folds in on itself, it can trap air, thus forming smaller, daughter bubbles. These daughters can then do the same, leaving behind a generation of grandbaby bubbles. And so on.
The tinier the bubbles, the greater their internal pressure. So when these babies blow, they can disperse 6 their contents far and wide. Which is fine if you’re sipping 7 champagne. But less welcome in a hot tub that might be full of cold and flu
- Wilson was feeling restless. There was a tickle in his throat.威尔逊只觉得心神不定。嗓子眼里有些发痒。
- I am tickle pink at the news.听到这消息我高兴得要命。
- There were two glasses of champagne on the tray.托盘里有两杯香槟酒。
- They sat there swilling champagne.他们坐在那里大喝香槟酒。
- West Coast aficionados of postwar coffee-shop architecture(Karal Ann Marling) 西海岸战后咖啡店式建筑的狂热追随者（卡拉尔安马林） 来自互联网
- Clay developed a radical style which appalled boxing aficionados. 克莱发展出一种震惊拳击迷的全新风格。 来自互联网
- Fault ruptures may consist of a single narrow main break. 断层破裂可能只包括单独一条狭窄的主裂隙。 来自辞典例句
- The dry seed ruptures and the green leaf uncurls. 干瘪的种子裂开了，卷曲的绿叶伸展了。 来自辞典例句
- A cat retracts its claws. 猫缩进它的爪子。 来自《现代英汉综合大词典》
- The split graph is given endomorphism images are retracts. 给出了任意自同态像图都是收缩核的分裂图的结构。 来自互联网
- The cattle were swinging their tails to disperse the flies.那些牛甩动着尾巴驱赶苍蝇。
- The children disperse for the holidays.孩子们放假了。