This plan may be familiar to people who watched “The Wire”—David Simon, the main writer on the series, was a crime reporter in Baltimore in the mid-1990s.

观看过电影《火线》的人们或许熟悉该计划---《火线》连续剧的主要作者是20世纪90年代中期巴尔的摩的一位报道犯罪的记者戴维•西蒙。

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But there was little urgency to the plan: the line had never been completed and was mostly just barbed wire.

但是，人们根本没有意识到计划的紧迫性：防御线从未完成，大多只是铁丝网。

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Taking an example, introduces the inevitable conditions in the wire cut plan and its program.

通过实例，介绍上、下异形零件的线切割加工工艺及编程具备的必要条件。

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