Qos
abbr. Quality of Service 服务质量
🗣️ 情景例句
What power options are available? ( steering, brakes, windows.... )
（这种汽车）有中控系统吗？
Every potter praises his own pot.
老王卖瓜，自卖自夸。
That's international practice. We can't break it.
这是国际惯例，我们不能违背。