She is wearing a pert little hat.
她头戴一顶小巧别致的帽子。
她戴著一顶雅致的小帽子。
In the PERT network, a project is composed of many tasks.
在网络计划问题中，一项大的工程由许多工序合成。
PERT has an important process that is drawing network pictures.
网络计划技术有个重要的步骤是画网络图。
PERT has an important process that is drawing network pictures.
网络计划技术有个重要的步骤是画网络图。
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