难得一次 meaning in Chinese

once in a blue

On that day , people dress up like ghost , dance with rhyme of the music , to catch that once in a year chance , enjoy the wild party and have fun
在这一天，人们会把自己打扮成幽灵鬼怪，合着音乐一起舞动，好好把握这一年难得一次的狂欢。
" initiation is an opportunity that occurs once in a million years . being a human being is already very difficult , and in order to meet a real master and get initiated into this quan yin method is even more so . i cannot tell you , i have no human language to describe to you the preciousness of this method .
印心是百万年难得一次的机会，人身已经是很难得了，而要遇到一位真师并且印心修行观音法门则更是稀有，我真的无法用人类的语言来向你们描述这个法门的宝贵。