阿姆斯壮登陆月球，他说的第一句英文是什么

That’s one small step for a man，one giant leap for mankind

应该是这一句

译文：这是我的一小步，却是人类的一大步！

maybe:
It is a small step to me.but it is huge step to human! (made out of whole cloth）

one small step for a man
one giant leap for mankind.
可能吧.

That’s one small step for a man，one giant leap for mankind。

官方安排：That’s one small step for a man，one giant leap for mankind。
如果让他自己随便说的话，“God bliss me”也是有可能的吧

He said:
Damn it! I forgot to bring my light! it's too dark here.

= =!! Just for fun~