光線

light ray / CL:條|条[tiao2],道[dao4] / light / illumination / lighting (for a photograph)

light / ray / CL:道[dao4] / bright / only / merely / to use up

thread / string / wire / line / CL:條|条[tiao2],股[gu3],根[gen1] / (after a number) tier (unofficial ranking of a Chinese city)