垒球场上也发生过同样的事。

Same thinghappened on the baseball diamond.

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全部病例均在全胸腔镜下完成，按照垒球场原则胸腔镜三切口，无中转开胸病例。

All the cases were accomplished by VATS, making three incisions in accordance with the principles of Softball Field, no case was changed to thoracotomy.

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以2008年北京奥运会丰台垒球场场地建设方法为例，阐述了建设垒球场场地的技术流程。

In this paper, taking construction of Fengtai softball field for Beijing 2008 Olympics as an example, the technological process is described.

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