Ffd
[医][=focal film distance]焦点胶片距离
🗣️ 情景例句
What's your telephone number?
你的电话号码是多少？
Do you have difficulty matching you feelings with words?
你是很难把自己的心意用言语表达吗？
Well, I can't leave before nine. I have a lot of work to do.
嗯，我9：00以前离不开。我有很多作业要做。