1.In 1783, two other Frenchmen stepped forward and said they would take to the skies in a Montgolfier balloon.
1783年，另两位法国人把热气球的研制向前推进了一步，他们说会用热气球把自己送上天空。
2.The Montgolfier brothers launched the first passenger balloon in France in 1783.
孟高尔费兄弟于1783年在法国将第一个载客汽球送上天空。