1. （常指用某种仪器）测量，测定，算出
    If you gauge the speed or strength of something, or if you gauge an amount, you measure or calculate it, often by using a device of some kind.

    e.g. He gauged the wind at over thirty knots...
           他测出风速在30节以上。
    e.g. Distance is gauged by journey time rather than miles.
           距离以行程时间而非英里数来计算。

2. 测量仪器；计量仪
    A gauge is a device that measures the amount or quantity of something and shows the amount measured.

gauge

    e.g. ...temperature gauges.
           温度计
    e.g. ...pressure gauges.
           压力计

3. 判断，判定（人的行动、情感或意图）
    If you gauge people's actions, feelings, or intentions in a particular situation, you carefully consider and judge them.

    e.g. ...as he gauged possible enemy moves and his own responses...
           他在盘算着敌人可能的动向和自己的对策时
    e.g. His mood can be gauged by his reaction to the most trivial of incidents.
           从他对鸡毛蒜皮的小事的反应就可以判断出他的情绪。

4. （评价或判断的）事实，依据，标准
    A gauge of someone's feelings or a situation is a fact or event that can be used to judge them.

    e.g. The index is the government's chief gauge of future economic activity.
           这一指数是政府判断未来经济活动的主要依据。

5. （铁道的）轨距
    A gauge is the distance between the two rails on a railway line.

    e.g. ...a narrow gauge railway.
           窄轨铁路

6. （金属等的）厚度；（金属丝等的）直径
    A gauge is the thickness of something, especially metal or wire.