| 单词 | ball bearing |
| 释义 | ball bearing also ball-bearing Word forms: ball bearings countable noun Ball bearings are small metal balls placed between the moving parts of a machine to make the parts move smoothly. |
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英语词典包含147115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。