Backscatter
[计] 反向散射
✅ 同义词
🗣️ 情景例句
Hey, everybody,
嗨， 大家听着，
What does she mean by canceling her performance?
她取消自己的演出是什么意思？
An advertisement which begins with the magic word FREE can rarely go wrong.
凡是用“免费”这个神奇的词开头的广告很少会失败的。