Ldr
abbr. 光敏电阻（light dependent resistor）
🗣️ 情景例句
Have you ever done any correspondence work?
你有处理文书的经验吗？
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
It's a small world.
世界真小。