Backdating
n. 倒填日期\\nv. 追溯（backdate的ing形式）
🗣️ 情景例句
autograph copies for the guests at the opening?
在展览开幕时为客人在书上亲笔签名呢
I played card this afternoon.
我今天下午在打牌。
I'll have a ham salad, please.
请给我一份火腿沙拉。