文字稿:

450 metres above a gorge near the Grand Canyon.

With no safety harness, American acrobat Nik Wallenda walks the tightrope.

Wind made the cable sway during the 22 nail-biting minutes it took him to cross.

But towards the end he felt confident enough to kneel and blow a kiss to fans waiting on the other side.

Vocabulary 词汇:

gorge 峡谷

safety harness 安全带

walks the tightrope 高空走钢索

nail-biting 非常紧张的，令人提心吊胆的

blow a kiss 飞吻