And then as suddenly as it had surfaced, the great 31)cetacean had vanished, dissolving back into the water without a sound.是什么意思_And then as suddenly as it had surfaced, the great 31)cetacean had vanished, dissolving back into the water without a sound.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句