Biquadratic equation
双二次方程
🧩 词语组成解析
a. 四乘幂的, 双二次的\\nn. 四乘幂, 四次方程式
🗣️ 情景例句
They're open until nine o'clock.
他们开到九点。
There is a time to speak and a time to be silent.
该说话时说话，该沈默时沈默。
But he has not promised to give you any of his blood.
但是他并没有答应给你他身上的任何一滴血。