然而，保留了初始时间，以对数字进行保守估计。

However, the original times were kept, to keep the Numbers conservative.

youdao

还假定了一个初始时间，初始时间一般都可以设成零。

And we've also assumed an initial time, which usually we can just call zero.

youdao

它可能有时需要编制计划，而且总是需要一个开始实行的初始时间。

It can sometimes require planning and always requires an initial push of momentum to get started.

youdao

Initially, its location as a function of time is equal to i times x plus j times y.

初始时刻,它的位移作为时间的函数等于,i ? x + j ? y

耶鲁公开课 - 基础物理课程节选

First of all, negative time should not bother anybody; t=0 is when I set the clock, I measured time forward, but yesterday would be t = -1 day, right?

首先,负的时间对我们不存在任何干扰,t=0使我们设定的初始时间,我是用顺序计时,所以昨天就可以记为-1天,对吗

耶鲁公开课 - 基础物理课程节选