传感器用了约10秒钟探测到足够的信号来估算地震的强度并发出警报。
It would have taken about ten seconds for sensors to detect enough signals to conclude the quake was serious and issue the alerts.
如果有人试图拦截光子，光子属性状态将受到干扰，并发出警报。
And if anyone attempts to intercept the photons, the properties get disturbed and an alarm is raised.
一个有感知力的表带能自动探测疾病或是老年居住者的心脏问题，并发出警报。
A sensing wristband automatically detects a fall or heart problems in an elderly occupant and can send an alert.
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