Radioelectret
放射性驻极体
🗣️ 情景例句
If you'd like to hear some new English songs, I suggest you download them from the web.
如果你想听一些新的英文歌，我建议你上网下载。
How long?
多长？
Do you think you'll be able to go to sleep right away?
你认为你马上就能睡着吗？