n. 独奏, 独唱, 单独表演

a. 单独的, 独奏的, 独唱的

vi. 放单飞

n. any activity that is performed alone without assistance

n. a musical composition for one voice or instrument (with or without accompaniment)

n. a flight in which the aircraft pilot is unaccompanied

v. fly alone, without a co-pilot or passengers