Another moon, very similar, is Europa. 另一个非常相似的卫星，木卫二。 Galileo visited Jupiter's system in 1996 and made fabulous observations of Europa. 伽利略号在1996年时探访了木星系统，对木卫二进行了详细的观察。 Europa, we also know, has an
刘柏川: 为何普通民众需要懂得权力。 I'm a teacher and a practitioner of civics in America. Now, I will kindly ask those of you who have just fallen asleep to please wake up. (Laughter) Why is it that the very word "ci
We're hardwired to become leaders of the pack. 我们天生就喜欢做领导。 It's starts really, really early. How early? 这从很早很早就开始了。多早？ Well babies will fake a cry, pause, wait to see who's coming and then go right ba
Favorite My fellow citizens, at this hour American and coalition forces are in the early stages of military operations to disarm Iraq, to free its people and to defend the world from grave danger. &qu
