Ofa
光纤放大器（optical fiber amplifier）
🗣️ 情景例句
I've been working too hard. I'm beat.
我工作的太多，我快垮了。
Take one thing with another.
由此及彼。
He could not wash himself or get dressed.Instead, his sister or his parents had to help him.
他自己不能洗澡或穿衣服，他的姐姐或父母亲就只好帮他的忙。