Ycs
(yc 的复数) abbr. 云南商务管理体系（Yunnan Commodity和Yunnan Commerce的缩写）；重型橡套软电缆的一种型号
🗣️ 情景例句
Did she say why she had to leave today?
她说了她为什么今天非走不可吗？
We have some reports to show you for background information.
我们还有一些报告向你介绍背景资料。
(Bruce rings up his father on the telephone.)
（布鲁斯给他父亲打电话。）