Biquadratic
a. 四乘幂的, 双二次的\\nn. 四乘幂, 四次方程式
🗣️ 情景例句
She has the ability to keep calm in an emergency.
她有处变不惊的本事。
Long time no see!
好久不见。
Don't talk to me like that!
别那样和我说话！