【形式ばった表現】 inexperience
unfamiliar 《with》
a strange [an unfamiliar] place.
to be accustomed to something
to become accustomed to something unusual
the act of habituating
to get used to doing something
よく慣れたこと
He is not used to teaching―not accustomed to class-work.
the state of growing accustomed to something
すぐに慣れるわ。
the act of getting used to something
I still cannot get used to that.
I still cannot get used to that.