单词	petahertz
释义	pet·a·hertz (pĕtə-hûrts′) n. Abbr. PHz One quadrillion (1015) hertz.
随便看	tr. trabeate trabeated trabeation trabecula trabecular Trabzon trace trace traceability traceable traceably trace element trace fossil tracer tracer bullet traceried tracery traceur trache- trachea tracheal tracheary element tracheate tracheid

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。