熟語JLPT-N1
fixed
一 いち
一one一日first of the monthもう一度again一度once一時moment一度にall at once一番best万一by some chance一応once一流first class一々one by one一概にunconditionally一見unfamiliar一言single word一日one day一定fixed一同all present一人one person一部one copy e.g. of a document一部分a part一別parting一面one side一目a glance一様uniformity一律evenness一連a series第一first