first-class
- adj. 优秀的；第一流的
- adv. 优秀地；最好地；第一流地
考试真题
- Fundamentally, the USPS is in a historic squeeze between technological change that has permanently decreased demand for its bread-and-butter product, first-class mail, and a regulatory structure that denies management the flexibility to adjust its operati
2018年考研真题（英语一）阅读理解 Section Ⅱ