Backscattered
反(背)向散射的
🗣️ 情景例句
Too bad we can't bottle the sound.
不能将声音装瓶真是太可惜了。
What time is the mail delivered on Saturday?
邮件在星期六什么时间被递送？
We can't go to the public parks or swimming pools.
我们不能上公园或是去游泳池。