For three months the Russians poured men and machines into the Kursk salient to build a string of defence lines almost 48km (30 miles) deep.是什么意思_For three months the Russians poured men and machines into the Kursk salient to build a string of defence lines almost 48km (30 miles) deep.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句