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1·We hire military and test pilots to do the maneuvering. We have to get special flight clearance.

我们聘请了军事和测试飞行员来操纵，必须得到特殊飞行许可。

2·It's rare for journalists to be on this flight, but photographer Charles Smith and I have gotten clearance to join the 16 crew members, officers, and scientists.

记者随同飞行是少有的事，但是，我和摄影师查尔斯·史密斯已得到许可，参加由机组成员和科学家组成的16人小组。

3·Will all passengers for flight CZ3029 please proceed to customs and immigration for clearance immediately.

CZ 3029航班的旅客，请马上办理海关和边防检查申报。

4·The overall plan and the detailed plan of airport areas must meet the State's technical standardized requirements of airport clearance protection and flight safety.

机场地区总体规划和详细规划应当符合国家有关机场净空保护和飞行安全的技术规范要求。

5·The exercise simulated an emergency rescue flight at takeoff clearance during take-off because of interruption of fault plane, plane off the runway.

这次应急救援演练模拟一架出港航班在起飞过程中由于飞机故障中断起飞，飞机冲出跑道。