R-f current
[电] 射频电流
🧩 词语组成解析
🗣️ 情景例句
We need a new coffee-table book,
我们需要一本可以摆在客厅的书，
How long have they been married?
他们结婚多长时间了？
After they carved the characters on rocks, they put a piece of wet paper on top of the characters and beat it lightly.
他们把字刻在石块上后，再把一张潮湿的纸放在字的上面，并轻轻地拍打。