Afsc
abbr. 空军系统司令部（Air Force Systems Command）
🗣️ 情景例句
It has been raining constantly for two days.
雨连续下了两天。
Then you'll need small change.
那你需要换小零钱。
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。