2008年11月，南达科塔的苏福尔斯宇宙之星国际公司开始为价值180万美元的订单供应36架气球飞艇，美军将它们部署在伊拉克。
In November 2008 Aerostar International of Sioux Falls, South Dakota, began filling a $1.8m order for 36 blimps to be deployed by the American armed forces in Iraq.
橄榄石是一种镁铁硅酸盐，普遍存在于宇宙之中——远之星系，近之彗星。当然，珠宝店也不例外，其宝石级原石被称为贵橄榄石（peridot）。
Olivine is a magnesium iron silicate that exists throughout the universe — in distant galaxies and local comets — as well as in earthly jewelry stores, in a pristine, gem-quality form called peridot.
一颗爆炸中之星体在数秒间释放出的能量，为什么好像是宇宙中所有其他恒星能量的总和？
How can an exploding star, for a few seconds, appear to emit nearly as much energy as all the other stars in the universe combined?
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