Time flies as an arrow.

光阴似箭。

youdao

So, Boltzmann understood that and he explained how entropy is related to the arrow of time.

所以，波尔兹曼了解这一点并且他解释了熵是如何与时间之箭相关的。

youdao

So the arrow of time is built on top of whatever local laws of physics apply.

所以说，时间之箭建立在任何适用当地物理定律的地方。

youdao

That limit will be some arrow we can call the velocity at the time and it will always be tangent to the curve.

那个极限也就是一个矢量,我们称之为瞬时速度,并且它总是和轨迹相切的

耶鲁公开课 - 基础物理课程节选

p2 p1 is greater than p2. Then I want to reverse direction of time. I want the arrow of time to go so that the gas goes from p2 to p1.

一直推，一直推，p1大于,接下来我想让时间倒流,让气体从p2到p1。p2比p1小。

麻省理工公开课 - 热力学与动力学课程节选

So, for the most part any time we talk about or draw pointers an arrow suffices, which really 71 in there is a number like 71, which is the literal byte that the F is actually in in RAM, but frankly who cares?

所以，每次我们讨论,或者用箭头表示指针,在指针里面有一个数字，如,那是F在RAM中的字节，但是谁在乎它呢？

哈佛公开课 - 计算机科学课程节选

This serves as a crude model of entropy, Smolyaninov says, representing the thermodynamic arrow of time.

FORBES: University of Maryland Researchers Build a Big Bang In Their Lab

He concedes that his "arrow of time" view is a minority one.

WSJ: Study Points to a Single, Original Language for All Humans

The "arrow of time" is based on the notion that it is possible to use data from modern languages to trace their origins back 10, 000 years or even further.

WSJ: Study Points to a Single, Original Language for All Humans