| 1. | Drain piping may require to be protected against freezing .
泄水管要求有防冻保护措施。 |
| 2. | Such guards also protect against fraying by roe deer .
这种保护措施还可防止獐鹿摩擦损伤。 |
| 3. | Our army must be protected against surprise attacks .
我们的军队必须做好对于突然袭击的戒备。 |
| 4. | It can be used for devising systems to protect against frost damage .
它可用来设计防止霜害的方法。 |
| 5. | Each type evokes antibodies which protect against the homologous .
每一种类型都能产生抗同种病毒的抗体。 |
| 6. | Poly(vinyl alcohol)has been protected against radiation by benzalation and benzoylation .
聚乙烯醇的耐辐解可通过苄叉化和苯甲酰化提高。 |
| 7. | Each type evokes antibodies which protect against the homologous, but not heterologous virus .
每一种抗原型都能产生抗同种病毒的抗体，但对异种病毒则不能。 |
| 8. | But once the infection is over, antibodies remain in the bloodstream to protect against future attack .
但是一旦感染过后，抗体即留在血液中以防备将来再次的袭击。 |
| 9. | The wall must be protected against chemical attack from highly corrosive components of the combusting gases .
必须把室壁保护起来以防止来自燃气的高度腐蚀性成分的化学侵蚀。 |
| 10. | A patient, any patient, is entitled to have confidence respected, to be protected against a gabby doctor .
病人，任何病人，都有权要求医生尊重他的隐情，有权不吃一个多嘴饶舌的医生的亏。 |
