Question

请教一句英语，谢谢！

PRESIDENT JOHN KENNEDY: "I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the Earth. No single space project in this period will be more impressive to mankind or more important to the long-range exploration of space. And none will be so difficult or expensive to accomplish."
请教，其中的“before this decade is out”是什么意思。特别是“is out”是什么意思。谢谢！

Answer 1

应该是 这个十年结束前 is out是快过出了的意思

Answer 2

就是在这十年快结束之前

Answer 3

在这十年结束之前

Answer 4

在十年前临之前（for u ref)

Answer 5

应该是十年之前的意思