/laɪt/ N-UNCOUNT ~ is the brightness that lets you see things. ~ comes from sources such as the sun, moon, lamps, and fire; 光;光线; blue light; N-COUNT A ~ is something such as an electric lamp which produces ligth; 灯; You left the ~ on; You forgot to turn off the ~.
When it didn’s get the green light, I continued to live on it for many months, until it just stopped working with newer versions of hardware and software. By then, the team had moved on to other things.