一 [yī]

• 数词
  • （最小的正整数） one:

    one hundred kilograms;

    一百公斤

    a book;

    一本书

  • （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

  • （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

  • （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?

  • （表示动作是一次或短暂的）:

    wait a bit;

    等一等

    give a cough;

    咳一声

  • （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

  • （用在动词或动量词前面， 表示先做某个动作， 下文说明动作结果）:

    get over in one jump;

    一跳跳了过去

    This explanation of his restored our confidence.

    经他这么一说， 大家又都有信心了。

• 副词
  • （一旦; 一经） once; as soon as:
  • （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。

• 助词
  • （用在某些词前加强语气）:
  • （用在某些词前加强语气）:

    be as easy as catching a turtle in a jar;

    一似瓮中捉鳖

    To think that things should have come to such a pass!

    事态之严重一至于此!

• 名词
  • {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