形容词

1. 达不到的;难到达的;不可(或不易)进入的
An inaccessible place is very difficult or impossible to reach.

1. capable of being reached only with great difficulty or not at all

Synonym: unaccessible

2. not capable of being obtained

e.g. a rare work, today almost inaccessible
timber is virtually unobtainable in the islands
untouchable resources buried deep within the earth

Synonym: unobtainableunprocurableuntouchable