Listing 7 shows you how to extend your service implementation class to support life cycle management and how to use the service context.

清单7告诉您怎样扩展您的服务实现类来支持生命周期管理以及怎样使用服务上下文。

youdao

We created a virtuous cycle in which an ever growing middle class had the ability to consume more goods and services which created more and better jobs thereby stoking demand.

我们创造了这样一个循环圈：越来越多中产阶级有了消费能力，购买更多的商品和服务，因此创造了更多更好的就业岗位，这样就会产生国内需求。

youdao

We created a virtuous cycle in which an ever growing middle class had the ability to consume more goods and services, which created more and better jobs, thereby stoking demand.

我们创造了这样一个循环圈：越来越多中产阶级有了消费能力，购买更多的商品和服务，因此创造了更多更好的就业岗位，这样就会产生国内需求。

youdao

And I wanted to do it a different way which is a little bit convoluted, but it introduces the idea of a thermodynamic cycle, and it's something that we're going to use a lot in the class.

现在我将用另一种,有些复杂的办法来推导这一关系，在这一过程中引入,我们今后会常接触到的,热力学循环的概念。

麻省理工公开课 - 热力学与动力学课程节选

This is a life cycle of a particular class of viruses called retroviruses.

这里是称为逆转录病毒的一种特殊病毒的,生命周期

耶鲁公开课 - 生物医学工程探索课程节选

Every stock market cycle and every asset class bubble, people get sucked by a good story at the top and sell at the bottom in a panic.

FORBES: What Are Some Mind Blowing Facts About Wall Street?

The new carrier is also designed to significantly reduce maintenance costs from those of the current Nimitz class of carriers, another major driver of life-cycle costs.

FORBES: Despite Budget Woes, The Navy Is Unlikely To Cut Carriers

Garry Wills has argued, after all, that Irish Catholic ideas about sin that sin is negotiable currency, to be practiced, done penance for, forgiven allowed John Kennedy some serenity as he screwed his way through the White House typing pool, just as the habits of Protestant Evangelical belief, in forgiveness and temptation and forgiveness, in a never-ending cycle, helped Bill Clinton find a common language with working-class people.

NEWYORKER: I, Nephi