Thee school was placed under lockdown until police had searched the building and determined there was no further threat to students, said Patti Holm GREn, spokes woman for the school system.

教育系统女发言人帕蒂·霍蒙格林说，警方彻底搜查了学校并确认没有进一步的危险，在此之前学校一直处于关闭状态。

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In case of meeting the dust collecting efficiency of the system, the economical ventilation quantity was determined making the system to be operated under economic condition.

在满足系统除尘效率的情况下，确定了除尘器经济入口风量，使系统经济运行。

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Relevance is not universal, but depends on the universe of meaning and the belief system under which relevance is determined.

相关性不是普遍的，而是依赖于意义世界和决定了相关性的信仰系统。

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We conclude that, under a paper-money system, a determined government can always generate higher spending and hence positive inflation.

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