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
Who isn't?
有谁不紧呢？
Truth hath a good face,but ill clothes.
真理面目善良；但衣衫褴褛。
I was very tired when I arrived home. I'd been working hard all day.
我到家时非常累。我一整天都在玩命地干！