preheatWiktionary 原文中文vt. 预热来自 ECDICT构词拆分pre-前缀Before; physically in front of. · Before; earlier in time; beforehand.+heat词根/词干词源说明From pre- + heat.释义（英文）动词 Verb(transitive) To heat beforehand or in advance, to heat something in preparation for further action.名词 NounThe act of heating before another process.词族派生词（2）preheatablepreheater相关词（1）reheat