常見例句Alex Filippenko received his Ph.D. in Astronomy from Caltech in 1984 and joined the UC Berkeley faculty in 1986. 在本次講座中,他將介紹人們是如何從觀測遙遠(yuǎn)的超新星確定我們的宇宙是在加速膨脹的; 返回 Filippenko