a book of matches的用法和样例：
- The Fitbit Tracker, a new wireless, wearable device the size of a book of matches, aims to take the guesswork out of staying fit.The legwork, however, remains up to you.
- Have you got a book of matches?
- I need a book of regular stamp and two of airmail.
- Half a dozen air mail labels and a book of stamps.
- The petrified tree was a book of nature.