形容詞 inaccessible:

1. capable of being reached only with great difficulty or not at all
   同義詞：unaccessible
2. not capable of being obtained
   同義詞：unobtainable, unprocurable, untouchable

1. A flexible fiber-optic instrument used to view an object or area, such as a body cavity, that would otherwise be inaccessible.
   纖維鏡利用光學纖維制成的一種韌性儀器，用于對一些用其它方法無法接近的物體或區(qū)域(如體腔)進行檢查
2. The cave is inaccessible, high up the top of a cliff which no one can climb.
   那個洞穴在沒人能爬的高聳的懸崖頂上，無法進入。
3. His busy schedule made him completely inaccessible to his students.
   他的時間排得很滿，學生根本無法和他接觸。
4. The scientist discovered the plant in the most inaccessible reaches of the jungle.
   這位科學家在叢林深處最難進入的區(qū)域發(fā)現(xiàn)了這種植物。

in.ac.ces.si.ble

adj.（形容詞）
Not accessible; unapproachable:
無法接近的；不能達到的：
例句：
inaccessible executives.
難以接近的經(jīng)理們

【引伸】
in.acces.sibil.ity
n.（名詞）
in.acces.sibly
adv.（副詞）