Qcs
abbr. 质量控制系统（Quality Control System）
🗣️ 情景例句
My wife died four years ago.
我妻子四年前去世了。
When an opportunity is neglected,it never comes back to you.
机不可失，时不再来；机会一过，永不再来。
Snow lay thick on the ground.
地上积着厚厚的雪。