Qi
abbr. 质量指标（Quality Index）
🗣️ 情景例句
I work part time in the summer to pay for my tuition.
我夏天做兼职来支付学费。
Come back!
回来！
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。