英汉词典

1. 多变的;易变的;反复无常的
    Something that is variable changes quite often, and there usually seems to be no fixed pattern to these changes.

    e.g. The potassium content of foodstuffs is very variable...
           食物中钾的含量差别很大。
    e.g. There was a bit of a wind and it was blowing onshore, variable, but quite strong.
           有一阵风朝岸上吹来，风向变化不定，但风力很强。