| 单词 | activate an alarm |
| 释义 | activate an alarm They tied up a cashier and a security guard minutes before the guard was due to activate the alarm system. Times, Sunday Times Fire alarms and other emergency switches are typically non-reversible, using a piece of glass which must be broken to activate the alarm. Retrieved from Wikipedia CC BY-SA 3.0 U-boat order to activate the alarm and begin a crash dive. Retrieved from Wikipedia CC BY-SA 3.0 Once detected, an electronic signal can activate an alarm or a camera that can capture an image or video of the motioner. Retrieved from Wikipedia CC BY-SA 3.0 The signal locks or unlocks the doors and in some cases activates an alarm. Times, Sunday Times |
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