| 1. | They are producting a substitude for the medical 他们正在研制一种该药的替代品 |
| 2. | They are studying the institute of the medicine 他们正在研制一种该药的替代品 |
| 3. | They are developing a substitute for the medicine 他们正在研制一种该药的替代品 |
| 4. | They are research a new medicine to instead it 他们正在研制一种该药的替代品 |
| 5. | They are developing a substitute for this medicine 他们正在研制一种该药的替代品 |
| 6. | Most of its weapons and equipment are being developed 其大部分武器装备正在研制。 |
| 7. | They are working on a substitute for the drug 他们正在研制一种该药的替代品 |
| 8. | They are studying one type of medicine instead of it 他们正在研制一种该药的替代品 |
| 9. | Scientists are developing new drugs to treat arthritis 科学家正在研制治疗关节炎的新药 |
| 10. | They are researching a substitute of this kind of medicine 他们正在研制一种该药的替代品 |