她是我在这个世界上最好的朋友之一，每隔几天我就会给她打电话。
She's one of my best friends in the world. I call her and talk to her every couple of days.''
你打出一个主题的名称，例如“中国的印刷术”，计算机就会给你提供一份全世界有关这个主题的杂志和书的清单。
You can type the name of a subject, e. g. "Printing in China", and the computer will give you a worldwide list of magazine and book titles.
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