The purpose of this problem is to find how many distinct trees you can see from an arbitrary point in a pine plantation (assumed to stretch "for ever").

本问题是要你来计算当站在人工松林中任意一个点时，你能看清的树有多少。

youdao

A mobile agent can suspend its execution at an arbitrary point, transport itself to another machine, and then resume execution from the point of suspension.

它可以在任意的执行点挂起，将自己传送到另外一个网络平台，然后在这个新的平台上，从挂起点继续执行；

youdao

Also, the subject which is a concentrated couple acting on an arbitrary point and in any direction of a plate with four built-in edges, is discussed in this paper.

文中还讨论了在任意点任意方向受集中力偶作用的四边固定板问题。

youdao

pV So there is an arbitrary set point that needs to be defined, right? Because what you actually measure in the lab are changes in enthalpy, just like what you measure when you look at energy change of some sort, you measure the change in energy, right.

焓也是一样，焓是U加,所以需要定义一个任意的设定值,对吧？因为实际上你在实验室里,测得的是焓的改变,就像你在研究某种能量变化时，所测量的那样，你测量的是能量的改变，对吧。

麻省理工公开课 - 热力学与动力学课程节选

David Sloan Wilson, of Binghamton University, in New York state, agrees with that point, but reckons the actual moral sense an individual acquires is not arbitrary, as a language is, but is functionally adapted to circumstances.

ECONOMIST: Human evolution