Cephamycin
头霉素
🗣️ 情景例句
Tell me what you think, yay or nay?
告诉我你究竟是怎样想的，是还是不是？
Mary is in her freshman year.
玛丽大学一年级。
No, she's much younger than I am. She only started here this term.
对，她年纪比我小得多。她是这个学期才进校学习的。