我花了一个小时去背这首诗。

It cost me one hour to recite the poem.

youdao

对巴尔博亚岛作为让你感觉好像你有多少时间去背。

Being on Balboa Island makes you feel as if you have somehow gone back in time.

youdao

这门课并不要求大家去背元素周期表，一点都不要求。

You will never in this class have to memorize anything about the periodic table.

youdao

And I had mentioned several times thatyou do not need to memorize the majority of the equations and you don't need to memorize any physical constants.

另外我已经提过好几次了,绝大多数的公式大家都不需要去背,也不用去记任何物理常数。

麻省理工公开课 - 化学原理课程节选

You will never in this class have to memorize anything about the periodic table.

这门课并不要求大家去背元素周期表,一点都不要求。

麻省理工公开课 - 化学原理课程节选

- There are a few equations that you need to memorize -- those are the very simple -- very, very simple equations, such as e equals h times nu -- hopefully you don't have to sit down and try to memorize that, hopefully we all know that already.

只有几个公式是需要记住的-,它们都非常简单，非常非常简单，比如，E，等于，h，乘以，ν,希望大家不需要再专门去背了，希望我们已经都记住了。

麻省理工公开课 - 化学原理课程节选