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.
《简明英汉词典》
As in the field of space travel, so in undersea exploration new technologies continue to appear.
在太空旅行和海底探测领域, 新技术不断涌现.
中级百科部分
Space travel therefore would be impossible if we're looking at the special relativity.
如果我们紧盯着狭意相对论,星际旅行因此将成为不可能.
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Wernher von Braun was brought to the US after WW II to work on rocket and space travel technology.
沃纳冯布劳恩在二战后被带到美国研究火箭和太空旅行技术。
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