西方海域的界限以及众所周知的北方界限，在过去一直是巨大冲突的发生地。

This western maritime border, also known as the Northern Limit Line, has been the scene of numerous clashes in the past.

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当结果和预计的终止界限发生交叉时，北方癌症治疗小组数据安全监测委员会介入了按计划进行的暂时性分析。

The North Central Cancer Treatment Group Data Safety Monitoring Committee interrupted enrollment at a planned interim analysis when outcomes crossed predetermined stopping boundaries.

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