Quadrinomial
a. 四项式的\\nn. 四项式
🗣️ 情景例句
Would you like to sign the contract now?
你现在要签这合同吗？
Do you usually do arithmetic on Sunday?
你通常在星期日做算术吗？
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。