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(xué)纖維制成的一種韌性儀器，用于對(duì)一些用其它方法無(wú)法接近的物體或區(qū)域(如體腔)進(jìn)行檢查
2. The cave is inaccessible, high up the top of a cliff which no one can climb.
   那個(gè)洞穴在沒人能爬的高聳的懸崖頂上，無(wú)法進(jìn)入。
3. His busy schedule made him completely inaccessible to his students.
   他的時(shí)間排得很滿，學(xué)生根本無(wú)法和他接觸。
4. The scientist discovered the plant in the most inaccessible reaches of the jungle.
   這位科學(xué)家在叢林深處最難進(jìn)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(wú)法接近的；不能達(dá)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）