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- But in some key procedures, especially epitaxial wafer, there is still great gap compared with international first class level. 但是在关键环节，尤其是外延片的生长环节，与世界一流水平还有较大的差距。
- The advanced drill technology and management mode adopted by UNOCAL Corp in Gulf of Tailand is of the first class level in the world and is worth for us to learn and refer to. UNOCAL公司在泰国湾埃拉温气田采用先进的配套钻井和管理模式技术进行钻井作业,具有当代国际上一流的钻井水平,值得我们学习和参考。
- Annie: Speaking honestly ,I do appreciate the All Britain Lawn Tennis Tournament. It is organized by the All Britain Tennis Club and the All Britain Lawn Tennis Association. The tournament is first class level. 安妮：说真的，我非常欣赏“全英草地网球锦标赛”的比赛，因为它是由全英网球俱乐部，全英草地网球协会联合主办的国际性网球比赛，所以比赛水平可以说是一流的。
- Annie: Speaking honestly , I do appreciate the All Britain Lawn Tennis Tournament. It is organized by the All Britain Tennis Club and the All Britain Lawn Tennis Association. The tournament is first class level. 安妮：说真的，我非常欣赏“全英草地网球锦标赛”的比赛，因为它是由全英网球俱乐部，全英草地网球协会联合主办的国际性网球比赛，所以比赛水平可以说是一流的。
- He always travels first class expense is no object. 他出门总是用头等票－－费用不成问题。
- She took a first class in Oxford. 她在牛津大学获得头等优异成绩。
- Tom came to school late and missed the first class. 汤姆迟到且没有上到第一堂课。
- We now rank first class at municipal (city) level. 本馆现为地（市）级一级馆。
- This ticket doesn't entitle you to travel first class. 你这张票不能坐头等位。
- I'd like a first class ticket to Warsaw for this Sunday. 我要一张本星期日飞往华沙的头等机票。
- bisporus soy sauce reached the first class level of national standard for brewage soy sauces. 讨论了无机膜装置在食醋、酱油、啤酒、黄酒等酿造食品中的应用价值及前景。
- That article is an example of first class journalism. 那篇文章是一流新闻文字的范例。
- I sent the letter first class on Monday. 星期一我已把信用快递寄出。
- These hand embroider one is all first class goods. 这些手绣织品都是一等品。
- Class level: beginner group, intermediate group and advanced group. 教学分级：初级班、中级班、高级研讨班。
- Can I transfer to a first class coach? 我可以换到头等车厢吗？
- The entertainment provided was first class. 提供的招待是一流的.
- I'll send the package first class. 我把这邮包按第一类邮件邮寄。
- The cooking in this restaurant is first class. 这家餐馆的烹饪属一流水平。
- Will that be first class or economy class? 您愿意要一等舱还是经济舱?
