Usages

• 一手 : (n) skill | (adv) all by oneself; without the help of others
• 一对 : couple | pair
• 一套 : suit | a set
• 一下 : (adj) one time; once | (adv) in a short time; suddenly; all at once
• 八一 : Bayi (August 1, anniversary of Nanchang Uprising)
• 不一 : vary | differ
• 初一 : first day of lunar month | New Year's Day
• 单一 : single | only | sole
• 第一 : first | No. 1
• 合一 : unification
• 划一 : (n) uniformity
• 另一 : another
• 每一 : every
• 十一 : eleven
• 同一 : identical | the same
• 统一 : to unify | to unite | to integrate
• 万一 : just in case | if by any chance | contingency
• 唯一 : only | sole
• 惟一 : the only | sole
• 五一 : 5-1 (May 1st)
• 一百 : a hundred
• 一半 : half
• 一边 : one side
• 一层 : layer
• 一匙 : spoonful
• 一串 : strand
• 一吹 : puff
• 一次 : first | first time | once | (math.) linear (of degree one)
• 一打 : dozen
• 一代 : generation
• 一带 : region | district
• 一旦 : in case (something happens) | once (something becomes true, then...) | in one day
• 一道 : together
• 一点 : a bit | a little
• 一定 : surely | certainly | necessarily | fixed | a certain (extent, etc.) | given | particular
• 一度 : for a time | at one time | one time | once
• 一堆 : pile
• 一服 : dose
• 一概 : (adv) all without any exceptions
• 一个 : a | an
• 一贯 : consistent | constant
• 一号 : first day of the month
• 一会 : a moment, a while
• 一局 : inning
• 一举 : (n) move; an act; an action | (adv) with one move; at one stroke
• 一句 : a line of verse | a sentence
• 一口 : readily | flatly (deny)
• 一块 : piece
• 一连 : in a row | in succession | running
• 一流 : (n) front rank | top quality
• 一律 : (adj) same; uniform | (adj) all; without exception
• 一轮 : first round (of a match or election)
• 一面 : one side
• 一排 : row
• 一旁 : aside | to the side of
• 一篇 : one-sided
• 一片 : piece | slice
• 一瞥 : glance | glimpse
• 一齐 : at the same time | simultaneously
• 一起 : together
• 一千 : one thousand
• 一切 : all | every | everything
• 一群 : gang | regiment
• 一身 : (n) the entire body | (meas) for wearing a suit
• 一生 : all one's life | throughout one's life
• 一时 : temporary | momentary
• 一天 : one day
• 一同 : along | together
• 一头 : (adv) headlong; directly | (adv) rapidly | (adv) simultaneously
• 一团 : regiment
• 一碗 : bowl
• 一万 : ten thousand
• 一线 : frontline
• 一些 : some | a few | a little
• 一心 : wholeheartedly | heart and soul
• 一行 : party | delegation
• 一月 : first month | January
• 一再 : repeatedly
• 一张 : sheet
• 一阵 : a burst | a fit | a peal
• 一直 : continuously | always | from the beginning of ... up to ... | all along
• 一致 : unanimous | identical (views or opinions)
• 一周 : one week
• 一步 : (single) step
• 一但 : if | in case | in a short time | once
• 一共 : altogether
• 一秘 : first secretary
• 一向 : all along | the whole time | constantly | earlier | lately
• 一项 : an item | a thing
• 一样 : same | like | equal to | the same as | just like
• 一般 : same | ordinary | common | general
• 之一 : one of (sth) | one out of a multitude | one (third, quarter, percent, etc.)
• 周一 : Monday