changeable
单词辨析：
普通用词，指很有可能变化的或经常变化的。
The weather was very changeable last winter.
去年冬天天气变化无常。
Her moods are very changeable.
她的情绪变化无常。
My boss has a changeable character.
我的老板性格多变。
指气候、人的情绪、事物的品质等经常会变化的。
The weather there is variable.
那里的天气变化无常。
A drinking friend is a variable friend.
酒肉朋友靠不住。
The quality of the hotel food is variable.
这家酒店的饭菜时好时差。
相关例句：
A global variable is a representation of a changeable value which can be accessed and modified using SQL statements.
全局变量表示一个可以使用SQL语句访问和修改的可变值。
I stayed inside, however, because the weather was so changeable.
然而，我却留在屋内，因为天气实在太多变了。
What changeable weather, fine one moment, raining the next!
这天气真是变化无常，时而晴天，时而下雨！
Chaos and support vector machine theory has opened up a new route to study complicated and changeable non-linear hydrology time series.
混沌和支持向量机理论为研究复杂多变的非线性水文时间序列开辟了新的途径。
The forecast is for changeable weather.
预报针对的是变化无常的天气。
But it's rather changeable.
但是也说变就变。