Backprojection
幕后投影; 背景放映
🗣️ 情景例句
I know the company well. It's big.
这家公司我很清楚。是大公司。
I couldn't wait any longer for you!
我等你等得不耐烦了！
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。