| 1. | The garrison was alert, but too few .
驻防的军队是保持警惕的，但是人数毕竟太少了。 |
| 2. | Constant vigilance is necessary in order to avoid accidents .
为了避免意外事故，必须经常保持警惕。 |
| 3. | We can seek a relaxation of tensions without relaxing our guard .
我们能一方面保持警惕一方面设法缓和紧张局面。 |
| 4. | All this had a tendency to keep us awake, and knock the traditional dullness out of garrison life .
这一切都足以使我们保持警惕，打破驻防生活一向的沉闷。 |
| 5. | While danger threatens we must all be on guard
危险正逼近，我们必须保持警惕。 |
| 6. | Now we post a guard to let us knowifit ' s coming
现在保持警惕直到它出现为止 |
| 7. | You must stay wide - awake against possible dangers
你必须保持警惕,防止可能的危险。 |
| 8. | Public urged to stay vigilant against dengue fever
市民须保持警惕预防登革热 |
| 9. | He was injured and dehydrated but alert
他受了伤并已经脱水但还是保持警惕。 |
| 10. | The police said that the public should be vigilant
警方说公众应保持警惕。 |
