diàn yuán
electric source; power pack
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请把电源插头插到插座上。
Qǐng bǎ diànyuán chātóu chā dào chāzuò shàng.
Please plug the power plug into the socket.
电脑的电源坏了。
Diànnǎo de diànyuán huàile.
The computer's power supply is broken.
手机的电源不足。
Shǒujī de diànyuán bùzú.
The phone's battery is low.
断电 (duàn diàn)
power off
停电 (tíng diàn)
power outage
The Chinese word 电源 (diànyuán) for "power supply" is composed of two characters: 电 (diàn) and 源 (yuán). The character 电 (diàn) means "electricity" and is derived from the Chinese character 闪电 (shǎndiàn), which means "lightning". The character 源 (yuán) means "source" and is derived from the Chinese character 泉源 (quányuán), which means "spring". Together, the two characters 电源 (diànyuán) literally mean "electricity source" and refer to the device that provides electrical power to a device or system.