HSK V4
Correct

率先

/ shuàixiān / 
Strokes

Definition

to take the lead/to show initiative

Example

As an Adverb

first; take the initiative; take the lead

1
Shuàixiān
率先
cǎiqǔ
采取
xíngdòng
行动
jìnzhǐ
禁止
héwǔqì
核武器

take the initiative in banning nuclear weapons