Radiofrequency
高週波
🗣️ 情景例句
What did you say? I didn't quite get that.
你说什么？我没听清楚。
On a crowded train, one comes in contact with many people.
在拥挤的火车里面，会和许多人接触。
Don't look out of the window concentrate on your work.
别看窗外，专心工作。