距地14分钟

<p>Imagine you&#39;re Alan Eustace. You&#39;re in your 50&#39;s, you&#39;ve got two young daughters and a loving wife at home and you&#39;re the Senior Vice-President of &#39;Knowledge&#39; at Google. But none of that matters to you right now -- because in less than a minute the giant balloon strapped to your back is going to inflate to the size of a football stadium as it carries you over 135,000 feet strai...</p>