The period of time for the shortest intervals is not set but is derived by the variance of the free memory statistics.

没有设置最短的时间间隔，而是通过可用内存统计信息的变化得出。

youdao

I see at intervals the glance of a curious sort of bird through the close-set bars of a cage: a vivid, restless, resolute captive is there; were it but free, it would soar cloud-high.

我透过木条紧固的鸟笼，不时观察着一只颇念新奇的鸟，笼子里是一个活跃、不安、不屈不挠的囚徒，一旦获得自由，它一定会高飞云端。

youdao

NHTSA analysis found drivers using hands-free technology talk on the phone with greater frequency and for longer intervals.

国家公路交通安全局分析发现司机使用电话免提技术谈话频率非常高而且时间长。

youdao

These workers would be more free if they could work 40 hours a week at any time intervals they felt like, e.g. working ten hour days Saturday through Tuesday.

FORBES: Freedom and the Workplace