Ffd
[医][=focal film distance]焦点胶片距离
🗣️ 情景例句
That's a good idea.
好主意。
May I ask the reason for your remittance?
可以请问汇款的原因吗？
For the first time in his life, he became the proud owner of a bed which had springs and a mattress.
他平生第一次自豪地拥有了一张既有弹簧又带床垫的床。