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1·The advantage of the balloon is that it will be cheaper than a space plane or rocket.

气球的优点是它比航天飞机或火箭便宜。

2·A space plane is different from an ordinary plane.

航天飞机与普通飞机不同。

3·The orbital space plane promises to be much safer than the shuttle.

轨道太空飞机应该较太空梭来得安全。

4·An alternative to the space shuttle was the original space plane of the Eisenhower era.

在艾森豪·威尔时代，最初的设想是空天飞机，而不是航天飞机。

5·The Pentagon has repeatedly said that the space plane is simply a “test bed” for other technologies.

五角大楼曾多次表示，空天飞机仅是一个技术“试验床”。

6·The 29-foot-long space plane, much smaller than the space shuttles, can stay in orbit for up to nine months.

这位29英尺长的空天飞机，比航天飞机更小，可以留在轨道上长达9个月。

7·On Friday, after three weeks in space, Kiah and Rilla finished work and left Ship OM-45 on a space plane to Kisangani.

这是个星期五，凯和瑞拉已经在太空飞行了三周。他们结束了工作，离开OM - 45号宇宙飞船，乘航天飞机飞往基桑加尼。

8·An application example is enumerated that the space plane parameters are confirmed based on invariance of cross radio.

列举一个应用实例，利用交比的不变性确定空间平面参数。

9·Virgin Galactic's space plane, the SpaceShipTwo, is expected to make its first test flights in the early months of 2010.

英国维珍银河公司宇宙飞船“太空船二号”将于2010年初进行首次试航。

10·Wonderful is that the design of space many ingenious use of the space plane Visual approach, the perfect combination of device and image display.

设计的精彩之处在于空间中多处巧妙的运用了“空间平面视觉”手法，将装置与形象展示完美结合。