[yī]
[数]
（最小的正整数） one
one hundred kilograms
一百公斤
a book
一本书
the First Company of the First Battalion
一营一连
eleven thousand
一万一
I have met her once.
我见过她一次。
He was in a class ahead of me at Dalian University.
在大连大学时他比我高一班。
（同一） same
bitter gourds from the same vine; people with a similar bitter past
一根藤上的苦瓜
the same thing
一码事
Opinions differ.
意见不一。
We are of the same family.
咱们是一家人。
（另一） also; otherwise
Merbromin is also known as mercurochrome.
汞溴红一名红汞。
（全； 满） whole; all; throughout
the whole winter; all winter; throughout the winter
一冬
one's face covered with dust
一脸的土
a star-studded sky
一天星斗
They swam all afternoon.
他们游泳游了一下午。
Everybody in the room was overjoyed.
一屋子的人都欢腾起来。
（专一） concentrated; wholehearted
heart and soul; wholeheartedly
一心一意
（单一； 唯一） single; alone; only one
hit the target with a single shot
一枪就打中了目标
Can you manage all by yourself?
你一个人行吗?
She went alone.
她一个人去了。
（每一）each; per; every time
four groups with five people in each
四个小组，一组五人
tree meals a day
一日三餐
at 90 kilometres per hour
一小时90公里
ten persons a table
一桌十人
Every time we talk about the hard pioneering days, we have so much to say that we can't get it all out.
大家一提起那艰苦创业的日子， 总有说不完的话。
[副]
（一旦； 一经） once; as soon as
Once seen, never forgotten.
一见不忘。
You will be clear about it as soon as you look at it.
你一看就会清楚的。
At dawn they started off to work in the fields.
天一亮他们就下地干活去了。
Construction will begin as soon as preparations are completed.
一做好准备， 就破土动工。
[名]
[音] （中国民族音乐音阶上的一级） a note of the scale in gongchepu （工尺谱）， corresponding to 17 in numbered musical notation
[注意] “一” 单用或在一词一句末尾念第一声（阴平）。 在第四声（去声）字前念第二声（阳平）。 如“一半” [yí bàn]; “一共” [yí gòng] 在第一、 二、 三声 （阴平、 阳平、 上声） 字前念第四声（去声）， 如“一天” [yì tiān]; “一年”[yì nián]; “一点” [yì diǎ]。 本辞典为简便起见， 条目中起首的“一”字， 都注第一声（阴平）。