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空飞行能够获得令兴奋重大发现。

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.

科学家们说这次无太空飞行能够获得令兴奋重大发现。

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.

早期军用火箭的试验为太空飞行奠定了。

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

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。

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

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能够获得令兴奋重大发现。

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

早期军用火箭的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。