Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
He watches the CCTV news at 7:00 P.M. everyday.
他每晚 7 点都收看“中央电视台”的新闻联播。
The goods will be transhipped in Hong Kong.
货物将在香港转船。
They had little difficulty in finding it,
他们没费多大事儿就找到了盘子。