**米田淳一** @YONEDEN · 2017-04-15T04:38:05Z

軌道エレベーターはロマンだよねえ。本当に出来るのかなあ。出来たらすごく宇宙時代が進むよね。

Apr 15, 2017, 04:38 · Web · 0 · 1

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