英语词汇key bed怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	key bed
释义	Definition of key bed in English: key bed noun 1Mechanics= "keyway" (now rare). 2Geology= marker bed. Origin Mid 19th century; earliest use found in Repertory Patent Inventions. Definition of key bed in US English: key bed noun 1Mechanics= "keyway" (now rare). 2Geology= marker bed. Origin Mid 19th century; earliest use found in Repertory Patent Inventions.
随便看	one swallow does not make a summer one swallow does not make a summer one's way one's way one's way one's wont one's wont one's word one's word one's world one's world one's writ one's writ one's years one's years one-tail one-tailed one-teacher school one thing after another one thing after another one thing and another one thing and another one thing leads to another one thing leads to another one thousand

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Definition of key bed in English: