pattern sum的用法和樣例：
例句
- Surprise is a strong lack of agreement between the expected pattern and what actually occurs.
令人驚訝的是，我們期望的模式和實(shí)際情況相去甚遠。 - Soon following, the haymarket check pattern and the equestrian knight logo appeared on many of their items.
不久后，在干草市場(chǎng)檢查模式和馬術(shù)騎士標志出現在他們的許多物品。
