Nac
abbr. 网络准入控制（Network Admission Control）；全国航空委员会（National Air Council）；负导纳变换器（Negative Admittance Converter）；北大西洋公约理事会（North Atlantic Council）
🗣️ 情景例句
I'll need a few minutes to check over my notes again.
我再需要几分钟来核对一下我的笔记。
The plans are not even made yet.
这计划还不曾有人策划过。
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。