两栋小楼的底层已经彻底翻修过。The downstairs of the two little houses had been entirely refashioned.从底层干起，然后努力一步步升上去。Start at the bottom and try to work your way up.“身居高位很辛苦，”他说。“在底层更辛苦，”这个亿万富翁机敏地回答道。"It's tough at the top," he sa...
When I grew up, I became a professional astrophysicist.长大之后, 我成了一名职业的天体物理学家.Experimental Astrophysicist George Smoot is an active researcher in observational astrophysics and cosmology.试验天体物理学家乔治-斯莫特是一位在活跃天体物理学和宇宙学领域非常活跃...