sacrosanct

形容词 sacrosanct:

1. must be kept sacred
   同义词：inviolable, inviolate

1. My weekends are sacrosanct.
   我的周末是很宝贵的。
2. You can't cut spending on defence that's sacrosanct!
   国防开支可削减不得--那可是关天关地的事！