Photoswitch
光控继电器, 光控开关
🏥 医学释义
光电开关
🗣️ 情景例句
It's almost ten o'clock.
现在已经快十点钟了。
Kind words are worth much and cost little.
口头方便不费力。
I have always regarded the country as something you look at through a train window, or something you occasional visit during the weekend.
总认为乡村是透过火车车窗看到的那个样了，或偶尔周末去游玩一下景象。