Quadripod
平底四角锥体
🗣️ 情景例句
I'm very glad to meet you.
很高兴认识你。
Your work seems not satisfactory.
你的工作看起来并不令人满意。
They then knew that they had discovered the cause of the fire.
这时调查人员知道他们找到了发生火灾的原因了。