When it increases, these types of indicators go from a normal, to a warning, to an alarm state.

当日志利用率增长时，这些类型指示器的状态从正常变化到提醒、报警。

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A zero-sales situation might set off alarm bells—but the ringing phone feels like a normal interaction, not a failure.

零销售额为零还有可能会为你敲响警钟——而电话铃却让你觉得是种正常交流，并非失败。

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A slight drop in cabin pressure as the shuttle climbed into the sky raised an alarm, but engineers attributed it to normal expansion that allowed some oxygen to escape.

当航天飞机升入天空的时候，仓压的轻微下降引起了警报，但是工程师将它归为正常的膨胀，是可以准许的氧气泄漏。

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However, although lymph nodes may alarm parents because they are noticeable, they are more commonly a sign of normal fluctuation.

CNN: Should I worry about my son's swollen lymph node?