Certs
n. 确实的事情（cert 复数）
🗣️ 情景例句
You'd better watch your step or you'll get into trouble again.
你最好留点儿神， 免得再惹麻烦。
Your shoe lace is loose.
你的鞋带松了。
one ought to have at least two or three hobbies, and they must all be real.
至少应有两三种爱好，而且都比较实际。