非球面的与球状体略微不同,只有很小偏离, 如镜片.Varying slightly from sphericityand having only slight aberration, as a lens.一种叫“博克球状体”(Bokglobule)的冷分子氢“小金块儿”形成逆着星团的剪影.A nugget of cold molecular hydrogen , called a Bok globule , is silhouetted...
Next to bullfights and soccer, lotteries are Spain's biggest sport.除了斗牛和足球以外, 彩票是西班牙最热门的玩意儿.Lotteries were held in Italy almost five - hundred years ago.抽奖游戏大约500年前在意大利就开始了.What is your attitude towards changing you...