[dān dú]
alone; by oneself; on one's own; single-handed; solo; independent
travel alone; single-handed journey
單獨旅行
take independent action
采取單獨行動
He has a room to himself.
他單獨住一間屋子。
I want to have a talk with him alone.
我要和他單獨談一談。
Nobody can do this job alone [by himself].
單獨一個人干不了這個活。