All fetching pattern classes implement the same interface.

所有的抓取模式类都实现了相同的接口。

youdao

The author notes a similar pattern at work among India's newly affluent classes.

ECONOMIST: India's economy

Then a fourth roommate got sick, illustrative of a spreading flu pattern the girls said is obvious from the empty seats in classes.

CNN: University of Kansas students isolated by the flu

Like most ballet classes, Mr. Burmann's 90-minute class follows a regular pattern.

WSJ: Master Ballet Teacher Wilhelm Burmann | Creating