Chromakey
色度键（指在胶片原有图像上添加图像）
🗣️ 情景例句
She likes to go from man to man.
她的男友换了一个又一个。
Took you long enough!
你现在才来！
And, because most books were not printed in Braille.
因为大多数的书本没用布莱叶文印刷。