Mark Reid is an astronomer with the Harvard-Smithsonian Center for Astrophysics.

VOA: special.2009.01.20

And even in astrophysics, when you talk about stars, black holes, etcetera you're moving energy around.

即使在天文学中，当你谈论恒星，黑洞等时,你能量的转移。

麻省理工公开课 - 热力学与动力学课程节选

Space and time. Sounds like an astrophysics course, right?

空间和时间，这听起来,像不像天文课程上学的东西？

麻省理工公开课 - 计算机科学及编程导论课程节选