Nacks
(nack 的第三人称 -s形式) abbr. 否定应答（Negative Acknowledgement）
🗣️ 情景例句
But it'll be better tomorrow.
但是明天就会好多了。
They've promised to keep both we quality and the quantity of the 300 bicycles in conformity with the contract stipulations.
他们已承诺那300辆自行车的质量和数量一定与合同规定相吻合。
Good. Now give me a bottle of orange,please.
好，现在请给我一瓶橙汁吧！