认识的两次飞跃 two leaps in the process of obtaining knowledge; i.e. the first leap from perceptual to rational knowledge; and the second leap from rational knowledge to revolutionary practice.
水陆两用飞机 amphibian ; amphibious aircraft ; amphibious airplane ; amphibious plane
两翼齐飞 Qi Fei ; WP
平直两用飞机 convertiplane
鸿雁分飞两地书 CHAPTER FOUR
水陆两用飞行器 amphibian
两栖飞机 [航] Amphibian ; [航] amphibious aircraft
两架飞机 Airplanes
水陆两用飞机和车辆 amphibian
两极飞车 Polercoaster
美国航空公司每天有两个航班飞到曼谷，还有接着飞金边的航班。
American Airlines have two flights a day to Bangkok, and there are onward flights to Phnom Penh.
翼龙是第一批会飞的脊椎动物，它的化石遗迹已经吸引了古生物学家两个多世纪。
The fossil remains of the first flying vertebrates, the pterosaurs, have intrigued paleontologists for more than two centuries.
鹡鸰正往回飞，两只大喜鹊跟在后面。
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