使(機器)停止工作;關機(尤指計算機);關閉電源
to stop a machine, especially a computer, by turning off the electricity supply
We were told to power down at 9. 45.我們收到通知,9:45 要關閉電源。
釋義來自《牛津高階英漢雙解詞典》第 9 版