Quadrivial
n. （古罗马和中世纪）四科（算术、几何、天文、音乐）之一\\na. 四路交叉的, 四高级学科的
🗣️ 情景例句
visiting places of revolutionary interest, outings, parties.
参观革命圣地，出去郊游，或者举办晚会。
I'm sorry. You're right. I should have asked.
对不起。你说得对，我本该先问一声的。
The world had to wait almost another 100 years for the Channel Tunnel.
世界不得不再等将近100年才看到海峡隧道竣工。