Archaeologists set out recently to unlock one of the secrets of Stonehenge, the majestic monument in southern England-when were the first standing stones placed at the ancient religious site?是什么意思_Archaeologists set out recently to unlock one of the secrets of Stonehenge, the majestic monument in southern England-when were the first standing stones placed at the ancient religious site?在線翻譯_英語_讀音_用法_例句