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
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