Backprojection
幕后投影; 背景放映
🗣️ 情景例句
No, thank you. Please tell him to phone me when he comes back.
不了，谢谢。他回来时，请告诉他给我打个电话。
Please try to focus your attention on the speaker.
请试着把注意力集中于演讲的人。
George heard the noise and came downstairs quickly.
乔治听到了响声，迅速地下了楼。