Certs
n. 确实的事情（cert 复数）
🗣️ 情景例句
He took care of my daughter
我女儿曾受他照顾，
How long did the movie last?
电影放了多久了？
Officials from Greenwich Observatory have the clock checked twice a day.
格林尼治天文台的官员们每天两次派人矫正此钟。