并列题名：Secret of the earth 并列题名：Secret of the sea 并列题名：Salt of the earth 并列题名：Secret of the ages 并列题名：Story of the earth 并列题名：Theory of the earth 并列题名：Cricket on the hearth 并列题名：Measures on the earth 并列题名：History of the earth 并列题名：Ends of the earth