"I feel honored to be standing here giving a speech" 是表达这个意思的常用说法。

"I feel honored" 表示 "我感到很荣幸"，"to be standing here" 表示 "站在这里"，"giving a speech" 表示 "演讲"。这句话的整体意思就是 "我感到很荣幸站在这里演讲"。

例句：

"I feel honored to be standing here giving a speech in front of such an esteemed audience." (我感到很荣幸在这样一个尊敬的观众前面站在这里演讲。)
"I feel honored to have been invited to speak at this event." (我感到很荣幸被邀请在这个场合演讲。)
"I feel honored to be standing here as the first woman to receive this award." (我感到很荣幸站在这里作为第一个获得这个奖项的女性。)