Expound upon
对…进行阐述
🧩 词语组成解析
upon
[ə'pɑn]
prep. 在…上面;当…时候;
🗣️ 情景例句
There's Mother and Grandpa ...
有妈妈和祖父呢……
Explosion
爆发
I'm poor, but I always enjoy myself! he said. I don't know why!
“我很穷，但我总是过得很愉快！”他说，“我不懂为什么！”