1.  fickle
2.  versatile
3.  polytropic

• 1. 多变的: flexible | fickle | volatile | checkered
• 2. 复杂多变的国际环境: complicated and volatile international situation | complex and changing international environment
• 3. 多变的职业: Protean career

更多释义

• 1.食品中钾的含量是多变的。
  The potassium content of foodstuffs is very variable.
  dict.yoduao.com
• 2.农民已经通过改变种植计划来适应多变的天气。
  Farmers already adapt to variable weather by changing their planting schedules.
  dict.yoduao.com
• 3.北美歌雀在切换到另一种类型之前，会一声一声地重复其中的一种，与之不同的是，北美歌雀会连续地创作更长的、更多变的歌曲，而不会重复。
  Unlike the song sparrow, which repeats one of its several song types in bouts before switching to another, the warbler continuously composes much longer and more variable songs without repetition.
  dict.yoduao.com

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