R-f preselectors
[电] 射频预选器
🗣️ 情景例句
Do you live on or off campus?
你住在校内还是校外？
To have a grandson
有了孙子
There is a journalist and writer living in America whose name is Alex Haley.
有一位住在美国的记者兼作家，名叫亚历克斯·哈利。