Quadrivial
n. （古羅馬和中世紀(jì)）四科（算術(shù)、幾何、天文、音樂）之一\\na. 四路交叉的, 四高級學(xué)科的
??? 情景例句
She said she'll call you later.
她說她等會兒給你電話。
He's an engineer.
他是工程師。
Broadly speaking, human beings may be divided into three classes: those who are toiled to death,
勞累至死的人、