VOA慢速英语:Earth’s Arctic Ice Disappears, Scientists Study Nearest Exoplanet

短语讲解：

1. These activities emit enough heat-trapping gas to melt three square meters of ice on the Arctic Ocean, according to the study.

according to 根据，按照
例句：According to her, grandfather called at noon.
据她说,祖父在中午打来电话。

2. Our next story comes from a star not too far from our own sun.

come from 源自; 来自某处; 出生于
例句：He's just come from the countryside.
他刚从乡下来。

3. The U.S. space agency, NASA, says it looks forward to additional research to know about the radius of the planet.

look forward to 期望，盼望
例句：He was looking forward to working with the new Prime Minister.
他期待着与新首相共事。

4. The radius of a planet sometimes is measured during transit, when it passes in front of a star.

in front of 面前; 在…前面; 当着…的面
例句：I stood for a few moments in front of the nearest shop window.
我在最近的一家商店的橱窗前站了一会儿。