Correct

大步

/ dàbù / 
Strokes

Definition

large strides

Example

As a Noun

big step/stride; long step

1
Qiánjìn
前进
  
/
hòutuì
后退
yī
一
dà
大
bù
步

take a long step forward/backward

2
Dàbù
大步
zǒu
走

walk with big strides

As a Noun

big step/stride (forward)

3
Wǒmen
我们
xiàng
向
chénggōng
成功
màijìn
迈进
le
了
yī
一
dà
大
bù
步
  
。

We have made a big step towards success.