Expounder
n. 解释者
✅ 同义词
🗣️ 情景例句
People who take less exercise seem more vulnerable to illness.
缺少运动的人对疾病的抵抗力就差。
I still need three more credits in Psych; maybe I'll take Ed Psych this term.
心理学我还需要三个学分。或许我在本学期修教育心理学。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。