英语词汇“black stain”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	black stain
释义	black stain black stain (blak stān) Black or gray discoloration of teeth near the gingival margins; may be caused by chromogenic bacteria or by orally inhaling silver or manganese dust.
随便看	permissibility permissible permissible alcohol limit permissible contamination limit permissible dose permissible explosive permissible exposure level permissible exposure limit permissible exposure limits permissible exposure limit/time weighted average permissible lamp permissible length permissible loss ratio permissible machine permissible maximum weight permissibleness permissible non-bank activities permissible nonbank activities permissible non-bank activity permissible nonbank activity permissible operating distance permissibles permissible sound level permissible stress sacramento river national wildlife refuge

英语词典包含2567994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。