| 1. | The hot, massive, high-luminosity stars of spectral types o and b are not distributed uniformly over the galaxy but are grouped into extensive, separate aggregates that have come to be called associations .
O型和B型的大质量高光度热星在银河系中分布并不均匀，而是聚集成为分开的大星群，即所谓星协。 |
| 2. | Type o is the kind of blood that hospitals most often need
型血是医院需求量最大的血型。 |
| 3. | Type o is the kind of blood that hospitals most often need
型血是医院最常用的一种血型。 |
| 4. | Type o is the kind of blood that hospitals most often need
型血是亿元最需要的一种血型。 |
| 5. | Type o is the kind of blood that hospitals most often need
型血是一种医院最常用的血型。 |
| 6. | Appeal for type a and type o blood donors with photos
捐血之星呼吁型及型血人士从速捐血附图 |
| 7. | Type o is the a kind of blood that hospitals most often need
型血是医院中最常需要的一种血型。 |
| 8. | Type o is the kind of blood that hospitals most often need
型血是医院里应用最广泛的一类血型。 |
| 9. | Type o is the most common blood group
型血是最常见的血型。 |
| 10. | Type o , same type as katie markum
O型，与凯蒂马克姆的相同 |
