Phonopore
n. [电信]电报电话两用装置
🗣️ 情景例句
She's doing fine, thank you.
她很好，谢谢你。
Have you drunk any coffee?
你喝过咖啡吗？
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。