| 单词 | petro- |
| 释义 | petro- or petri- or petr- pref. 1. Rock; stone: petroglyph. 2. Petroleum: petrochemistry. [Greek, from petros, stone; see per-2 in the Appendix of Indo-European roots.] |
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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。