Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞行奠定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶的太空飞行能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞行奠定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这驾驶的太空飞行能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞行奠定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说驾驶的太空飞行能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶的太空能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞行奠定。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶的太空飞行能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶的太空飞能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞行奠定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家次无驾驶的太空飞行能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭的试验为太空飞行奠定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶的太空飞行能够获得令兴奋的重大发现。

Early experiments with military rockets prepared the ground for space travel.

早期军用火箭试验为太空飞行奠定了基础。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶太空飞行得令兴奋发现。