If you are unaccustomed to something, you do not know it very well or have not experienced it very often.
例句
They were unaccustomed to such military setbacks...他們還不習慣這樣的軍事挫敗。It is a part of Britain as yet largely unaccustomed to tourists.英國的這一塊地方還很不為游客所熟悉。
ADJ-GRADED
不尋常的；奇怪的
If you describe someone's behaviour or experiences as unaccustomed, you mean that they do not usually behave like this or have experiences of this kind.
例句
He began to comfort me with such unaccustomed gentleness...他開始以那種少有的溫柔安慰我。His nose had been reddened by unaccustomed exposure to the California sun.經過加州陽光不同尋常的照射，他的鼻子曬紅了。
英漢詞典釋義
adj.
不習慣的
She is unaccustomed to public speaking.她不習慣于當眾演說。
不尋常的,奇怪的
his unaccustomed expression of anger他的不尋常的憤怒表情
英英詞典釋義
Adjective
1. not habituated to; unfamiliar with;
"unaccustomed to wearing suits"
2. not customary or usual;
"an unaccustomed pleasure""many varieties of unaccustomed foods""a new budget of unaccustomed austerity"