Photorelay circuit
[电] 光继电器电路
🧩 词语组成解析
光控继电器
🗣️ 情景例句
I don't see what you are getting at.
我不明白你究竟是什么意思。
When an opportunity is neglected, it never comes back to you.
机不可失，时不再来。
Oh, dear! What's wrong?
噢，天哪！怎么啦？