1. To separate(a distillate) by distillation. 
   蒸馏出用蒸馏分离（馏出物）
2. a distillate of petroleum, especially one used medicinally. 
   石油的蒸馏物，尤其作为医用。
3. A substance, such as a petroleum distillate, that is used as a catalyst, as in the spreading of an intentionally set fire. 
   催化剂，促媒一种可用作催化剂的东西，如石油蒸馏剂，可使纵火得以蔓延

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