如何提高心肺功能通过有氧运动。有氧运动指由于人体在一段持续时间内进行的身体活动而使身体对氧气需求量增加的一种状态。
Aerobic exercise, a method of conditioning the cardiorespiratory system by using a variety of activities that create an increased demand of oxygen over an extended period of life.
当一段联系持续时间足够长，使两个人通过一组相对稳定的预期连结在一起，这就叫做关系。
When an association continues long enough for two people to become linked together by a relatively stable set of expectations, it is called a relationship.
相反，观众可以有一段具体的时间来欣赏话剧或者戏剧，这段时间就是表演的持续时间。
By contrast, the audience encounters an opera or a play over a specific time, which is the duration of the performance.
缓存api的设计目的是为了将数据缓存较长的一段时间，或者缓存至满足某些条件时，但每请求缓存则意味着只将数据缓存为该请求的持续时间。
Whereas the cache API is designed to cache data for a long period or until some condition is met, per-request caching simply means caching the data for the duration of the request.
正如我们可以看到的那样，框的长度从0.11到0.20秒；这是一段非常短的持续时间(只有0.9秒，当排除异常值时，这给我们数据集内低分散度的一个确切证据)。
As we can see the box ranges from 0.11 to 0.20 seconds; this is quite a short duration only 0.9 seconds and gives us firm evidence of low dispersion in the dataset when the outliers are removed.
上次我们听了一段很有意思的曲子，《牛车》，当时他运用低频声音，持续时间长的原理，我们在最初和最后听到的都是低音。
We had that very interesting piece last time, "Polish Oxcart" where he used this principle of low sounds produce sound waves that stay forever and we hear those low sounds first and last.
目的：研究不同强度和持续时间的静态压力作用一段时间后对椎间盘的影响。
Objective. To investigate the effects of static compression with different loading magnitudes and durations on the intervertebral disc over a period of time.
持续时间的时间跨度，定义为一定数量的蜱一段时间的单位。
A duration consists of a span of time, defined as some number of ticks of some time unit.
持续时间的时间跨度，定义为一定数量的蜱一段时间的单位。
A duration consists of a span of time, defined as some number of ticks of some time unit.
应用推荐