| 1. | Automobile exhaust gases are considered the major source . 据认为汽车排出的废气是主要来源。 |
| 2. | Commercial banks have been a major source of loans to agriculture . 商业银行曾是对农业的主要贷款来源。 |
| 3. | As the range increases thermal noise tends to take over as the major source of inaccuracy . 当射程增大时,热噪声将成为一个主要的误差源。 |
| 4. | Empircally, mergers have also been identified as a major source of concentration increases . 从经验上讲,合并也同样可以看作是集中增加的主要根源。 |
| 5. | The current "high-tech" agricultural production system is a major source of environmental degradation in the united states . 当前高度技术化的农业生产体系是美国环境变劣的一个主要根源。 |
| 6. | The major sources of the material in this work can generally be identified despite our slim knowledge of the classical period . 书中材料的主要来源一般都能查到,尽管我们对古典时期所知甚少。 |
| 7. | Milk is the major source of calcium for babies 牛奶是婴儿获取钙质的主要来源。 |
| 8. | That has been a major source of heartburn for educators 这是教育者长期以来的痛。 |
| 9. | Fuel combustion is the major source of rsp 可吸入悬浮粒子主要来自燃烧燃料。 |
| 10. | That has been a major source of heartburn for educators 这使得教育工作者心痛不已。 |