A town of northeast Maryland east-northeast of Baltimore. Aberdeen Proving Ground, a major research, development, and testing installation, is nearby. Population, 11, 533.是什么意思_A town of northeast Maryland east-northeast of Baltimore. Aberdeen Proving Ground, a major research, development, and testing installation, is nearby. Population, 11, 533.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句