1.  unprecedented
2.  unparalleled

• 1. 空前: Unprecedented | beyond example
• 2. 空前膨胀: unprecedentedly inflated | unprecedented inflated | unprecedentedly inevened | unprecedented inflation
• 3. 空前绝后满天飞: Airplane | Soul Plane | Flying High

更多释义

• 1.我们现在看到暴力犯罪空前增多。
  We are now witnessing an unprecedented increase in violent crime.
  dict.yoduao.com
• 2.日元对美元的比价已跌至空前的低点。
  The yen has fallen to an all-time low against the dollar.
  dict.yoduao.com
• 3.这次使命已被宣布为一次空前的成功。
  The mission has been hailed as an unprecedented success.
  dict.yoduao.com

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