The last frontier in air travel was more than half a century ago when we went from propeller aircraft into the jet age, and it's been a long time since we had a step forward.
航空旅行的最后一个前沿领域是在半个多世纪以前，那时我们从螺旋桨飞机进入到喷气式飞机时代，而我们已经很久没有向前迈出一步了。
Propeller aircraft
原声例句
CNN 10 学生英语 2023年3月合集
英语百科
Powered aircraft
A powered aircraft is an aircraft that uses onboard propulsion with mechanical power generated by an aircraft engine of some kind.
Aircraft propulsion nearly always uses either a type of propeller, or a form of jet propulsion. Other potential propulsion techniques such as ornithopters are very rarely used.
- Access Control Service的意思
- Access control system的意思
- Access Control Systems的意思
- access control violation的意思
- access control violation fault的意思
- access control word的意思
- access coprocessor的意思
- access copy的意思
- access copyright collective society的意思
- access corridor的意思
- access count的意思
- access coupler的意思
- Access course的意思
- access courses的意思
- access cover的意思
- access criteria的意思
- access cycle的意思
- access cylinder的意思
- access database的意思
- access date的意思
- access deactivated的意思
- access decision的意思
- access declaration的意思
- access delay的意思
- access delivery information的意思