| 1. | America is a developed country of science and technology
美国是一个科学技术发达的国家 |
| 2. | America is a developed country which has advanced science technology
美国是一个科学技术发达的国家 |
| 3. | America is a developed country . china is a developing country
中国是个发展中国家.美国是个发达的国家 |
| 4. | America is a developed country
中国是个发展中国家 |
| 5. | America is a developed country
美国是发达国家。 |
| 6. | America is a developed country
美国是发达国家 |
| 7. | Mexico is a developing country , while america is a developed country . the means and experience in processing pollution problems in border areas between both
两国在处理边界环境问题时的做法和经验对于其他各国,特别是广大发展中国家处理类似问题具有借鉴意义。 |
