Chromakey
色度键（指在胶片原有图像上添加图像）
🗣️ 情景例句
A man can develop his mind by reading.
读书增进个人的智慧。
Just tell me what you'd like me to do.
你要我做什么就请你吩咐吧。
My coat and my umbrella please.
请把我的大衣和伞拿给我。