A 68-year-old Texas grandfather who was offered a seat on a subway in Rio de Janeiro shocked Twitter users around the world when he pulled off a stunt that would be difficult for a man even half his age -- a feat that was captured in pictures shared by his grandson.

来自美国得克萨斯州、在里约地铁上被让座的68岁老爷爷，耍起了只有他一半年龄的人都很难完成的惊险动作，这个壮举被他的孙子抓拍并分享，震惊了全世界的推特用户。

Britton Barker, 19, shared a series of photos of his grandfather, Wayne McEntire, on Twitter Thursday morning after he "very respectfully declined" the seat offered by a young Brazilian man on a relatively crowded train.

爷爷韦恩•麦肯泰尔“十分优雅地谢绝了”一个巴西年轻小伙在较拥挤地铁中的让座，在这之后，19岁的孙子布里顿•巴克周四上午在推特分享了一系列他的照片。

"He is one of the kindest and most polite people I know," Barker said of his grandfather.

巴克这样形容他的爷爷：“他是我所见过的最善良最有礼貌的人之一。”

The pair, from Amarillo, were leaving Rio Centre after seeing some Olympic events and heading back to their apartment on the Copacabana Beach, Barker told ABC News.

巴克告诉ABC资讯的记者，当天，这对来自阿马里洛的爷孙看完了一些奥运项目，正在从里约中心回科帕卡巴纳海滩公寓的路上。

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