pic.twitter.com/gDiGxLNDamIt was discovered that the inside of the bridge girder in China was hollow.中国の橋桁の内部が […]…
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pic.twitter.com/gDiGxLNDamIt was discovered that the inside of the bridge girder in China was hollow.中国の橋桁の内部が […]…
このサイトの記事を見る