Ofa
光纤放大器（optical fiber amplifier）
🗣️ 情景例句
All I do is study and take exams.
我要接受所有的学习和考试。
Love lives in cottages as well as in courts.
爱情无贵贱，贫负皆有之。
The boy was too nervous to speak.
那男孩紧张得说不出话来。