translation.en: Here's a little-known fact about that: the average age of the systems engineers, the controllers in the room that day, was 26, which means, among other things, their age, when they heard that challenge, was 18.
translation.zh: 这里有一个鲜为人知的事实： 那天在控制室里的系统工程师的 平均年龄是26岁。 这意味着，不管其他的事情， 当他们听到那个挑战时， 他们的年龄是18。