例句與造句

1. In unmodified aircraft, the pilot flying on the left of the leader has to fly in two pilot configuration.
2. The third aircraft was registered in Austria rather than the United Kingdom and the British authorities refused to let the airline operate an unmodified aircraft . This temporarily grounded the airline until the first Constellation returned to service in August 1961 and following the collapse of another British airline the Ministry eventually allowed them to operate the Austrian aircraft . In September 1961 following concerns about safety the airlines operating certificate was withdrawn by the British authorities and the airline ceased to operate.
3. It's difficult to find unmodified aircraft in a sentence. 用unmodified aircraft造句挺難的