SSS 2009-03-27
时间：2018-12-24 作者：英语课 分类：Scientific American(三)月
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
If you’ve ever popped open a jar of the pickled fish, you know that herring like to stick together. Actually, it’s something they do naturally, even before they’re crammed 1 into a container. In the ocean, millions of herring often band together in shoals that can stretch for miles. Now scientists say that herring shoals can form in seconds, as long as you have the right number of fish.
The scientists used a souped-up kind of acoustic 2 sensing that allowed them to image an area 100 kilometers in diameter about once a minute. Because sound waves get bounced off the bodies of the fishes, the researchers could count how many herring were around, and see exactly when they coalesced 3 into a shoal.
They found that herring start to shoal around sunset, gathering 4 together when the fading light makes it safer for them to rise from the seabed. Then, once the fish reach the critical density 5, they rapidly come together into one big happy mass o’ fish, results published in the March 27th issue of the journal Science.
Shoaling allows the fish to engage in bouts 6 of synchronized 7 spawning 8, and helps to protect them from predators 9. Because there’s safety in numbers. Especially when you’re all packed together like sardines 10.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
- He crammed eight people into his car. 他往他的车里硬塞进八个人。
- All the shelves were crammed with books. 所有的架子上都堆满了书。
- The hall has a fine acoustic.这个大厅的传音效果很好。
- Animals use a whole rang of acoustic, visual,and chemical signals in their systems of communication.动物利用各种各样的听觉、视觉和化学信号来进行交流。
- The puddles had coalesced into a small stream. 地面上水洼子里的水汇流成了一条小溪。
- The views of party leaders coalesced to form a coherent policy. 党的领导人的各种观点已统一为一致的政策。 来自辞典例句
- He called on Mr. White to speak at the gathering.他请怀特先生在集会上讲话。
- He is on the wing gathering material for his novels.他正忙于为他的小说收集资料。
- The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
- The region has a very high population density.该地区的人口密度很高。
- For much of his life he suffered from recurrent bouts of depression. 他的大半辈子反复发作抑郁症。 来自《简明英汉词典》
- It was one of fistiana's most famous championship bouts. 这是拳击界最有名的冠军赛之一。 来自《现代英汉综合大词典》
- Do not use the synchronized keyword in Managed Objects. 不要在管理对象上使用synchronized关键字。 来自互联网
- The timing of the gun was precisely synchronized with the turning of the plane's propeller. 风门的调速与飞机螺旋桨的转动精确同步。 来自辞典例句
- Encounter sites have a small chance of spawning a "Commander" NPC. 遭遇战地区有很小的几率遇到NPC指挥官。
- Instantly revives your Champion at your Spawning Pool, 9 minute cooldown. 立即在出生地复活你的英雄，冷却时间9分钟。