A warning alert indicates a non-critical condition that might indicate a non-optimal system, while an alarm alert is a critical condition requiring immediate action.

提醒警报指明了一个非临界条件，这类警报可能意味着当前系统不是最优化的，而报警警报指明的是临界条件，要求立即采取行动。

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A plurality of alert cones are needed to be engaged in using time, the warning belt is used to pull from the alert cones and the eurohole is detained on the peg of the other alert cone.

使用时需多个警示锥配合使用，将警示带从警示锥筒内拉出，并将挂孔扣在另一警示锥的挂钉上。

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The nation's civilian "high" alert -- the second highest level of warning -- was put in place Tuesday.

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Blind-spot warning systems alert a driver to the otherwise unseen presence of other cars to the side and rear of the vehicle on the highway, and some do the same for cross traffic when backing out of a garage or parking space.

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Authorities have also introduced a color-coded warning system to alert residents about dengue outbreaks in specific districts.

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