F-number
n. 数, 光圈数
🧩 词语组成解析
🗣️ 情景例句
No, thank you.
不用 谢谢你。
Would you answer the phone please?
你能接下电话吗？
We both tried to get the coins, but it was too late.
我们俩都试图把这两枚硬币拿出来，但太迟了。