Photorelay
光控继电器
🗣️ 情景例句
Well, I see you're feeling better.
嗯， 我看得出你感觉好些了。
What is done by night appears by day.
若要人不知，除非己莫为。
It is one of the most unpleasant discoveries which we all make that we must decline in this way,
人人必然会衰老。