Dfas
abbr. dark field alignment system 暗场对准系统; distributed financial accounting system 分布式财务会计系统; distributed frame alignment signal 分布式帧定位[同步]信号
🗣️ 情景例句
That's OK.
不去不要紧。
I said, Is there anything I can do?
我是说:我能为你做点什么吗？"
Yesterday I paid him a visit.
昨天我去看望了他。