Backscattered
反(背)向散射的
🗣️ 情景例句
But I flunked all these classes.
但是所有的这些课都不及极。
For those of you that didn't hear it, the question was how soon we could expect the product to be on sale.
你们并未听说过，问题是产品多快能上市。
No one knows the location of the hidden treasure.
谁也不知道藏宝地点在哪里。