"The first thing is not numbers,". "It is to find and fine-tune the right approach to implement the strategy already laid down.

VOA: standard.2009.09.29

Some people asked me, if they bought the earlier version of the text, you can find the translation to the earlier version of the text on these question numbers.

有人问我，如果他们买了这本书的早期版本，你们找到这本书早期版本的翻译,关于这些问题的数字。

麻省理工公开课 - 固态化学导论课程节选

if I say a particle's location is i times t^2 plus j times 9t^3, for every value of time, you can put the numbers in and you can find the velocity by just taking derivatives.

一个质点的位置,i ? t^2 + j ? 9t^3,在每一个时间点,你可以把数值代入,并通过求导得到速度

耶鲁公开课 - 基础物理课程节选