Quadriform
a. 有四种形态的, 包含四种形态的
🗣️ 情景例句
I see, it's not easy to marry and start a family. So when's the wedding?
我明白，要组织一个家庭并不容易。那么婚礼订在哪天举行？
What are you interested in studying?
你对攻读什么感兴趣？
Once he had done this, he had been able to turn on the supply.
一旦他接上了接头，他就能够打开供气阀。