Correct

定例

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Strokes

Definition

usual practice/routine

Example

As a Noun

usual practice; set pattern; routine

1
Měizhōu
每周
yóuyǒng
游泳
  
,
chéng
le
men
我们
jiā
de
dìng
定例
  

It has become a routine in our family to go swimming once a week.