您要查找的是不是：
- She is always on the alert for some new calamity. 她总是保持警觉以防某种新的灾难。
- The city must be on the alert for being polluted. 城市要防止污染。
- They must be constantly on the alert for the enemy. 他们必须随时注意敌人。
- They are always on the alert for traffic signals. 他们总是很留心交通信号。
- The alert for 'unrecovered log' has been raised. 已发出'unrecovered log'(未恢复日志)警报。
- Drivers must be on the alert for traffic signals. 司机必须注意交通信号。
- Sirens sounded the alert for an air raid. 空袭警报的警笛响起
- The draft for aircraft is sent to the airline by airmail. 订购航空器的汇票用航空邮件寄给了航空公司。
- Infantry may function as the pointer for aircraft and artillery. 步兵可以为飞机、大炮指示目标。
- Products to be displayed: Hand Tools for Aircraft Maintenance. 用于飞机维修的工具。
- The policemen were on the alert for an excaped convict. 一名逃脱犯令警方全面警戒。
- Alert for Aircraft 寻找飞机(航空用语)
- Her fears had always been on the alert for an upheaval. 她日夜提心吊胆，严防突变。
- In our reading we should always be alert for idiomatic expressions. 我们在阅读过程中应经常注意惯用法。
- The NMC has issued an orange alert for the cold front. 3-5日，东北地区东部的部分地区有大到暴雪。
- Stay alert for elevated squirrel activity in these cities. -Okay. 在这些城市中注意松鼠活动的增加。-好的。
- Upkeep of company's tools, equipment and vehicles for aircraft maintenance. 保持公司工具、设备和车辆处于完好状态。
- Tofind the easier solution, you need to be alert for a lazier way. 去寻找更简单的方法，你有必要转向一种更为懒惰的方式。
- A radio transmitter that emits a characteristic guidance signal for aircraft. 一种向飞机发送特殊导航信号的无线电传送装置。
- She was always on the alert for some new calamities. 她总是保持警觉以防某种新的灾难。
