| 1. | Us raises terror alert level for all flights
美国提高所有航班恐怖威胁警戒级别 |
| 2. | Threat level change - a home office statement
内政部声明将安全警戒级别降低 |
| 3. | Last thursday , the threat level was raised to critical
上周四，安全警戒级别被提升到了“危急” 。 |
| 4. | District elevated the threat level
分局提高了警戒级别 |
| 5. | Chloe , elevate our alert status
克罗伊，提高警戒级别 |
| 6. | " i want to explain as fully as i can why the change has been made
“我想对降低安全警戒级别的决定加以解释。 |
| 7. | Both britain and the united states have slightly downgraded their terror threat levels
英美轻微降低其恐怖威胁警戒级别。 |
| 8. | Both britain and the united states have slightly downgraded their terror threat levels
英美两国都降低其恐怖威胁警戒级别。 |
| 9. | Both britain and the united states have slightly downgraded their terror threat levels
英美两国都轻微地降低其恐怖威胁警戒级别。 |
| 10. | The relevant preventive measures under the alert response level have already been implemented
所有于警戒级别下的预防措施已经实行。 |
