The utility model relates to an earthquake alarm which is formed by the connection of a power circuit, a vibration sensor, an alarm delay control circuit and a sound alarm circuit.
本实用新型涉及一种地震报警器，由电源电路、震动传感器、报警延时控制电路和声响报警电路连接构成。
If an unknown person enters a home, the camera will send the owner a warning that will cause an alarm to sound on the owner's smartphone.
如果一个不知名的人进入家中，摄像头就会向主人发送警告，并在主人的智能手机上响起警报。
France and Australia may not have the United States' particular history of minstrel shows... but something about the act of portraying a white woman as black ought to sound an alarm, somewhere.
法国和澳大利亚也许没有美国那段流浪艺人涂黑脸表演的特殊历史…但这种把一名白人女子涂成黑色的行为，应该给某些人敲响警钟。
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