Definition (能量)
When a machine or device, such as a clock or battery, loses its energy, or if you deplete its power intentionally.
(使)耗盡能量;(使)減弱或停止工作
The battery in the watch is running down, so it needs to be replaced.
手錶的電池快沒電了,所以需要更換。
After running for eight hours, the machine has completely run down its energy.
運行了八小時後,機器完全耗盡了能量。
If not charged in time, the phone will quickly run down its power.
如果不及時充電,手機的電量會很快耗盡。