Covariate
n. 协变量, 相关变量
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
Excuse me to have kept you waiting.
对不起让你就等了。
The police had a difficult time, but they were most amused.
警察虽然吃了苦头，但他们还是感到很有趣。