当我年轻时，满怀理想主义，我相信改变世界是可能的。

When I was young and ___idealistic, I believed it was possible to change the world.

人们被她那关于更美好社会的理想主义愿景所吸引。

People are drawn to her ___idealistic vision for a better society.

他那理想主义的处理方式令人鼓舞，但有些人觉得他的计划不切实际。

His ___idealistic approach was inspiring, but some found his plans unrealistic.