Besides structural self-waterproofing of Xuanwu Lake Tunnel, Nanjing, an additional waterproofing layer was set up to ensure waterproofing reliability.是什么意思_Besides structural self-waterproofing of Xuanwu Lake Tunnel, Nanjing, an additional waterproofing layer was set up to ensure waterproofing reliability.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句