1. 渴;口渴
    Thirst is the feeling that you need to drink something.

    e.g. Coca is well-known for reducing hunger, thirst and fatigue...
           人们都知道可乐能消饿、止渴和解乏。
    e.g. Instead of tea or coffee, drink water to quench your thirst...
           渴了喝水，别喝茶或咖啡。

2. 干渴;缺水
    Thirst is the condition of not having enough to drink.

    e.g. They died of thirst on the voyage.
           他们在航行途中因缺水而死亡。

3. 渴望;渴求
    A thirst for something is a very strong desire for that thing.

thirst的意思

    e.g. Children show a real thirst for learning.
           孩子们对于学习表现出真诚的渴望。
    e.g. ...their ever-growing thirst for cash.
           他们对于金钱越来越强烈的渴求

4. 渴望;渴求
    If you say that someone thirsts for something, you mean that they have a strong desire for it.

    e.g. We all thirst for the same things.
           我们都渴望得到同样的东西。