Backward difference
[计] 后向差分
🧩 词语组成解析
🗣️ 情景例句
Did you forget something?
你是否忘了什么东西吗？
Will you please measure this window to see how wide it is?
请您测量这扇窗户看它有多宽？
Maybe she'd like a new handbag. Her bag doesn't look nice.
她可能想要一个新的手提包。她的提包看起来不够漂亮。