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。
单词 | propeller aircraft |
例句 |
原声例句
CNN 10 学生英语 2023年3月合集 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。 |
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