Recall that a plug-in author needs three things: a place to put the implementation, a way to expose the DSL (the class methods), and a way to expose the instance methods for the state machine.

回顾一下插件制作者需要的三个条件：放置实现的位置，公开DSL(类方法)的方法以及为状态机公开实例方法的方法。

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The elements can be put together in various ways. For example, a lap join may be held by a fillet, plug, or slot weld, and and a tee joint by a fillet or groove weld.

这些元素可以以不同方式组合在一起，例如：一个搭接接头可能用角接、塞焊和缝焊固定，一个丁字接头可以用一个搭接或槽焊来完成。

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Ms. LINDA HANCOCK: I just do not feel that some new individual coming in running for Congress, that has no seniority, is going to be able to go up there and put a plug in for funds for us and be able to get them.

NPR: DeLay Faces Tough Texas Primary Challenge

Allen said that in preparation for the storm, crews had pulled the drill string out, put a plug known as a "packer" in the casing pipe and filled the riser with seawater so the pipe would be stable.

CNN: STORY HIGHLIGHTS

All that would have put Mr Kohl's centre-right coalition in a jam even without a scramble to plug budget holes to qualify for the euro.

ECONOMIST: Germany