单词：open holes
单词：open holes 相关文章
In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou
超大质量黑洞
[00:00.52] 12.18 Holes in His Mind [00:06.29]Major James Nesmeth had a dream of improving his golf game and he developed a unique method of achieving his goal. [00:14.35]Until he devised this method, he was just your average weekend golfer, shooting
温馨夜读II
Residents and businesses in the Indian city of Mumbai, say they are eager to return to normal following the bloody three-day siege that killed nearly 200 people and turned the city into a battle zone. Raymond Thibodeaux has this report from Mumbai w
VOA标准英语2008年(十二月)
BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands surface. These cave systems form in carbonate rock, often on islands.
2010年VOA慢速英语(十一)月
New Data Adds to Understanding of 'Black Holes' WASHINGTON Scientists continue to learn more about black holes in space, places where the pull of gravity is so strong that not even light can escape. Black holes occur after supergiant stars explode in
VOA标准英语2016年(九月)
SCOTT SIMON, HOST: It is too warm in rural Alaska. In the state's southwestern region, high temperatures of 10 to 20 degrees above average are affecting everything from recreation to survival. From member station KYUK in Bethel, Anna Rose MacArthur r
2018年NPR美国国家公共电台1月