但是, 贝塔系数必须要用过去的数据来估计.However, estimate of beta is reached with the past data.至此, 贝塔斯曼全面退出在华图书销售业务.At this point, Bertelsmann completely withdraw from book sales business in China.阿尔贝塔龙是肉食动物, 它捕食其它的恐龙.Albertosaurus was a ...

“贝塔”的英语可以翻译为：[人名] Beytagh ...