Radio emission
出国 Abroad无线电发射，射电发射，射电辐射
🧩 词语组成解析
🗣️ 情景例句
What are you doing?
在做什么？
Don't look wise.
别自作聪明。
Last summer I spent days in the garden watching thousands of ants crawling up the trunk of my prize peach tree.
去年夏天，我花了好几天时间站在花园里观察成千只蚂蚁爬上我那棵心爱的桃树的树干。