英语词汇“gravel bed”的意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	gravel bed
释义	gravel bed 汉语翻译【机】砂砾层
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英语词典包含435040条英汉在线翻译词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

gravel bed