Quartic
a. 四次的\\nn. 四次方程
🗣️ 情景例句
I'm afraid not. We don't generally accept a letter of credit.
恐怕不行，我们一般不采用信用卡。
He who fears being conquered is sure of defeat.
怕吃败仗的就要打败仗。
I can't afford a new car.
我买不起一部新车。