| 1. | Animals may serve as a vehicle for viral transmission .
动物可能成为病毒传播的媒介。 |
| 2. | Mumps is an acute contagious viral infection .
流行性腮腺炎是一种急性接触性病毒传染病。 |
| 3. | Ulcerative dermatosis is a viral infection of sheep .
溃疡性皮肤病是绵羊的一种病毒性传染病。 |
| 4. | Asthmatics have an increased susceptibility to viral illnesses .
气喘病人对病毒性病变的敏感性增加了。 |
| 5. | A viral infection may be localized disseminated or inapparent .
病毒感染可以是局限的扩散性的或不显性的。 |
| 6. | A viral infection may be localized disseminated or inapparent .
病毒感染可以是局限性的，扩散性的，或不显性的。 |
| 7. | A viral infection may be localized, disseminated, or inapparent .
病毒感染可以是局限性的、扩散性的或不显性的。 |
| 8. | Viral infections can cause that chronic progressive neurololgical disease .
病毒感染可引起慢性进行性神经性疾病。 |
| 9. | A variety of viral agents cause aseptic meningitis or meningoencephalitis .
各种病毒性因子可引起无菌性脑膜炎或脑膜脑炎。 |
| 10. | No human tumor has yet been conclusively shown to be viral in origin .
至今尚不能下结论说有些人类的肿瘤是由病毒所引起的。 |
