一半一半的英文：
half and half

• Of course, if you simply consider mathematical chances, the odds are even on an h-bomb war within ten years
  当然，如果你单从数学概念方面考虑，那么十年之内发生氢弹战争的可能性是一半对一半。

• That is a job and a half.
  那是非常困难的工作。
• half-believe ";"half believing, half doubting
  将信将疑
• His reply was taken half seriously half in jest.
  他的答覆看来是半开玩笑半认真的。
• a half - and - half mixture of linseed oil and turpentine.
  亚麻籽油和松节油两种成分各占一半的混合物