However, a problem happened in the rocket's second stage.

然而，火箭的第二级发动机出现了问题。

Once testing of these rocket stages is complete here at the Marshall Space Flight Center.

一旦这些火箭级的测试在马歇尔航天飞行中心完成。

Local media say North Korea's satellite launch failed after the rocket's second stage malfunctioned.

当地媒体称，朝鲜的卫星发射失败是因为火箭第二阶段发生故障。

Manmade objects including everything from used rocket stages and satellite parts to tiny flecks of paint.

它们都是人造物，既有废弃的火箭推进器、卫星部件，也有油漆碎片。

The trash comes from explosions, spacecraft collisions and expendable rocket stages.

垃圾来自爆炸、航天器碰撞和消耗性火箭级。

The rocket stage is expected to be completely destroyed and to make a crater anywhere from 30 to 65 feet wide.

这节火箭预计将完全撞毁，并在它所撞击的地方留下一个30到65英尺宽的大坑。

Its three rocket stages accelerated New Horizons to such great speeds that it crossed the 400,000 kilometers to the moon in just nine hours.

它的三个火箭阶段能够把新视野号加速到足够的速度，以在九小时内抵达400000 公里之外的月球。

The alternative NASA had was to transport rocket stages across the Panama Canal, although this often required an additional few weeks or months.

美国宇航局的替代方案是通过巴拿马运河运输火箭级，尽管这通常需要额外的几周或几个月的时间。