Many engineers are required to obtain professional certification in order to practice in their field. What about software engineers?

许多工程师被要求获得专业证书是为了在他们的领域实践，那么软件工程师又是为了什么呢？

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WebSphere CloudBurst also provides WebSphere Application Server intelligence in the form of hardened, best practice configurations built on ten years of field experience.

WebSphere CloudBurst还提供了WebSphere Application Server智能，即构建在10年领域经验基础上的、可靠的最佳实践配置。

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They think people who change their jobs frequently are feckless. They believe that the only way to success is to stick to one job, for constant practice in a professional field helps make an expert.

许多人喜欢一生中做一件工作，他们认为经常换工作的人软弱无能，他们相信成功的唯一途径就是坚持一项工作，因为在一个专业领域里不断的实践有助于专家的形成。

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Agricultural output was also greatly stimulated by the creation of three-field farming instead of the old Roman practice of two-field farming.

FORBES: Fact and Comment

This week, one of them even came from his own teammate and regular practice-field victim, the defender Luis Enrique.

WSJ: Two Sides Riding a Switchback

After taking 29 grounders hit at him at third, A-Rod took 66 swings, including several long opposite-field homers, during batting practice.

WSJ: Yanks' Pettitte back from DL, Overbay in RF