不足，不够：指某物的数量或程度不够，不足以满足需求或期望。
短缺，缺乏：指某物的供应不足，无法满足需求。
... run over 跑过去，碾过去 run short 快用完，将耗尽 25．send 构成的短语动词： ...
run short 快用完；将耗尽; 行将告罄; 用完耗尽; 用完，耗尽 run short of 短缺,不足; 快用完; 缺乏，短缺; 缺少 .
... 3、run riot：茂盛;跟错踪迹;胡闹 4、run short：用完;不足 7、run wild：失去控制;变得荒芜 ...
... run over溢出，满出；略读，略述；辗过，浏览，匆匆复习 run short用完，耗尽 scrape through擦过，勉强通过 ...
We've run short of milk.
我们牛奶不够了。
But money is starting to run short.
但是钱开始逐渐减少。
We all have a friend who never seems to run short of cash.
我们有的朋友从来不会手头缺现金。
Let's assume that the user typed in a pretty short word we didn't run out of memory or anything crazy so here's the new feature.
假设用户输入,很短的单词，没有出现超出内存之类的问题,这里是新的特点。
计算机科学课程节选 : 哈佛公开课
So in the sense there is opportunity, and there may be more opportunity in the long run even if kind of the entrepreneurial opportunities are less frothy than they might have been in the short run.
因此从这个意义上讲现在是大好时机，长期来看会有更多的机遇,如果创业的机会不像短期机遇,看起来那么空洞的话。
微软CEO-Steve.Ballmer谈科技的未来课程节选 : 斯坦福公开课
You know, you are the only person on this show who during the short answer segment has ever referred anyone to a program they can run on the internet.
要知道，本节目开播以来，你是唯一,在速答环节不授人以鱼,而是授之以渔的嘉宾。
经济学课程节选 : 斯坦福公开课
As hydrocarbons run short, rising prices tend to spur both innovation and new, more expensive exploration activity.
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That was back when the fear was that the U.S. would soon run short of natural gas.
TEMPLE-RASTON: General Motors announced dismal earnings on Friday and said it could run short of money by mid-2009.