the process of making a liquid stronger or purer by heating it until it changes to a gas and then cooling it so that it changes back into a liquid, or a liquid made by this process

Usually the liquid is extracted by distillation. 通常液体是通过蒸馏提取的。

The oil is a mixture of hydrocarbons that can be separated into various distillations. 油是烃的混合物，可以被分离成各种蒸馏物。

something that gives only the main meaning or the most important parts of something, or the action of reducing something to its main meaning or most important parts

The report is a distillation of hundreds of past studies on the subject. 该报告是对过去关于该主题的数百项研究的提炼。

His distillation of Buddhism into six words is: "Change is part of the world." 他将佛教提炼为六个字：“Change is part of the world”，意为“变化是世界的一部分“。