该鸟为一夫一妻制，雌鸟担任筑巢、孵卵、育雏任务，雄鸟主要担任保卫领域及警戒任务。
The bird is monogamous, the female answers for nest building, hatching and brooding, the male answers for guarding home range and alerting.
水声网络必将面临巨大的安全威胁，在极端情况下，水声网络可能被破坏而无法继续担当警戒任务。
Underwater acoustic networks will face great security threats. At the uttermost circumstance, it will not work properly for the surveillance task.
同样，多阶段检测也可分为三种OOT警戒水平，但是这项任务太具有挑战性，不是那么简单。
Similarly, tests with multiple stages can be classified into the three OOT alert levels, but this task is much more challenging and less straightforward.
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