英语词汇“ballast pocket”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	ballast pocket
释义	WordReference Random House Unabridged Dictionary of American English © 2024 bal′last pock′et, [Railroads.] Rail Transporta depression that is formed beneath the ballast layer by penetration of ballast particles into the subgrade and that tends to collect moisture.
随便看	windowless monad windowlight windowpane windowpane shell windows window sash window seat window shade window-shop window shopper window-shopper window sill windowsill windowy windpipe wind plant wind-pollinated wind-pollination wind poppy wind power windproof wind pump wind river range windrode wind rose

英语词典包含188688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。