run low on

基本解释

In the course of your administrative duties, you might notice a system starting to run low on disk space.
在您完成管理任务的过程中可能会注意到，由于磁盘空间的原因，系统变得运行缓慢。
If passengers don´t return to the skies and fares don´t rise, some airlines could run low on cash, raising the specter of additional bankruptcies.
如果乘客不再乘坐飞机，机票价格不上涨，那么一些航空公司的现金会减少，将可能导致更多航空公司破产。
Reference queues are not as useful with soft references as with weak references, but they could be used to raise a management alert that the application is starting to run low on memory.
引用队列对于软引用来说，没有对弱引用那么有用，但是它们可以用于发出管理警报，说明应用程序开始缺少内存。

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