科学美国人60秒 SSS 2014-09-30
时间：2018-12-24 作者：英语课 分类：2014年Scientific American(九)月
At some point we all have to memorize the names of the earth's oceans . But in reality all these waters are connected, so how do we know where one body begins and another ends. Just follow the trash, because the location of sea-ferrying garbage can be used to define the ocean's borders. That's according to a study in journal chaos 1. Historicall speaking the planet's waters were partitioned into discrete 2 oceans for reasons that are geographical 3, historical or even cultrual. To approach the problem from a more anatomic perspective, researchers came up with a model of how surface waters move, which is where the rubbish comes in. Flotillas and flots are formed by currents that gather the garbage in large floating patches, but the currents also create barriers that minimize the mixing between different ocean regions. By modeling these currents, researchers have redefined the borders of the ocean basins based on how readily their waters mix. They find, for example,that a sliver 4 of Indian Ocean is really part of the South Pacific. The work should help track the ocean debris 5 or even the spread of spilled oil, and it could change the way we see our seas.
- After the failure of electricity supply the city was in chaos.停电后，城市一片混乱。
- The typhoon left chaos behind it.台风后一片混乱。
- The picture consists of a lot of discrete spots of colour.这幅画由许多不相连的色点组成。
- Most staple fibers are discrete,individual entities.大多数短纤维是不联系的单独实体。
- The current survey will have a wider geographical spread.当前的调查将在更广泛的地域范围內进行。
- These birds have a wide geographical distribution.这些鸟的地理分布很广。