Photoelectric relay
[电] 光电继电器
🧩 词语组成解析
relay
[rɪ'lɛi]
n. 接替人员，替班;传递;接力赛;继电器;
vt. 转播，传达;用驿马递送，使接替;分程传递;
🗣️ 情景例句
Hello, I would like to speak to ..., please.
喂， 我想找一下……
After my core courses are finished, I'll be doing independent study.
在完成基础课程之后，我将作独立的研究。
At the moment, they cover every inch of floor space and I actually have to walk on them to get in or out of the room.
这会儿，书把地板的每一点空隙都占据了，我实际上是踩着这些书进出房间的。