Optical relay
[电] 光继电器
🧩 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
I don't want my tonsils out.
我不想切除扁桃腺。
Sorry to have kept you waiting.
抱歉使你久等了。
Boy, I'm really glad to hear that.
哇，听了真叫人高兴。