"向祖国表白"用英语可以翻译为 "express love for one's country" 或者 "profess love for one's country".
这个短语源自中文，其中"向"的意思是 "toward" 或者 "in the direction of", "祖国"的意思是 "homeland" 或者 "motherland", "表白"的意思是 "express" 或者 "profess".
下面是一些例句：
I want to express my love for my country by serving in the miptary.
我想通过参军来表达我对祖国的热爱。
She professed her love for her country by singing the national anthem at the championship game.
她在冠军赛中唱国歌来表达对祖国的热爱。
He always wears a flag pin on his lapel to show his love for his country.
他总是在西装翻领上佩戴国旗胸针来表示他对祖国的热爱。