Equations
n. 方程式；等式；均等；均势（equation的复数形式）
🗣️ 情景例句
Life has its ups and downs, but it certainly has its rewards.
人生有沉也有浮，但是无论怎样都确有其价值。
I'll be ready within five minutes.
我五分钟内就可以准备好了。
It is one of the ugliest faces I have ever seen.
这是我见过的最丑陋的头像之一。