Quartic
a. 四次的\\nn. 四次方程
🗣️ 情景例句
It's no big deal.
没什么大不了的。
Let me go.
让我走。
You've done very well. It's a pity you missed the sports meeting last week.
你学得不错嘛。很可惜，你错过了上周的运动会。