Nacked
(nack 的过去分词) abbr. 否定应答（Negative Acknowledgement）
🗣️ 情景例句
What are you getting at?
你想说明什么？
If the old dog barks, he gives counsel.
如果老狗叫，他是给忠告。
They were climbing up the wall of the house and then on to the leaves of the tree.
它们正在顺着房子的外墙往上爬，然后爬上树叶。