The firm is developing a space vehicle called Dream Chaser, which could carry six to eight people to and from low-Earth orbit.
该公司正研发叫“追梦者”的航天飞船，该飞船能载6到8人在近地轨道往返飞行。
The space agency is due to retire the shuttle fleet this year to focus on developing a new spacecraft that can go beyond low-Earth-orbit .
由于“奋进号”即将退役，美国宇航局将重点研发能够超出低地球轨道的新的宇宙飞船。
With rapid developing of the high grade highway and the city orbit transportation in recent years, various kinds of curve beam bridge structure are already extensively adopted by our country.
近年来随着高等级公路和城市轨道交通的修建，各种曲线梁桥结构在我国已被广泛采用。
With rapid developing of the high grade highway and the city orbit transportation in recent years, various kinds of curve beam bridge structure are already extensively adopted by our country.
近年来随着高等级公路和城市轨道交通的修建，各种曲线梁桥结构在我国已被广泛采用。
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