Etiologist
n. 病因学家；病原学家；致病源学家 (etiology的变形)
🗣️ 情景例句
I majored in economic and trade English.
我主修的是经贸英语。
He is a gentle horse that never cast his rider.
驯良的马绝不会把骑手甩倒。
Hello!
您好！