The Navy says it does not know what the attack submarine hit while it was submerged in the eastern Marianas Basin, some 560 kilometers south of Guam.是什么意思_The Navy says it does not know what the attack submarine hit while it was submerged in the eastern Marianas Basin, some 560 kilometers south of Guam.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句