F number
焦距比数
🧩 词语组成解析
🗣️ 情景例句
Since I retired,
自从我退休以后，
Go three blocks and make a right. It's right there.
过3个街区，然后往右拐。那里就有个邮局。
Slowly, she said, We were all here before you. You must wait for your turn. Do you understand?
“我们这儿个个都排在你前面。你得等轮到你才行。你懂吗？”