从人类第一次登上月球起至今已有四十多年了。
It has been almost over forty years since man's first landing on the moon.
人类首次登上月球是一项史诗般的英雄伟绩。
Landing on the moon for the first time was an epic achievement.
我们从未想到过人类能登上月球。
人类已经屡次登上月球去探索它的奥秘。
We have sent repeatedly men to walk on the moon to explore it.
人类已经屡次登上月球去探索它的奥秘。
We have sent repeatedly men to walk on the moon to explore it.
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