Ack-ack
n. 高射炮
🧩 词语组成解析
[计] 确认字符, 肯定, 确认
[计] 确认字符, 肯定, 确认
🗣️ 情景例句
Great job!
干得好，干得妙！
Arthur must send that letter soon.
亚瑟，你必须立刻投递那封信。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。