第3課 An unknown Goddess
    1、 The city at one time must have been prosperous, for it enjoyed a high level of civilization.
    這座古城肯定一度很繁榮，因為它曾享有高度的文明
    Must have。。表示推測
    2、 She stood three feet high and her hands restedon her hips.
     她身高3英尺，雙手叉腰。