Backscatter
[计] 反向散射
✅ 同义词
🗣️ 情景例句
No admittance except on business.
非公莫入。
A joke never gains an enemy but often loses a friend.
开玩笑总不能化敌为友，反而有时会失去朋友。
'What has happened?' she asked.
“发生了什么事？”她问，