Correct

摔打

/ shuāida / 
Strokes

Definition

to knock/to grasp sth in the hand and beat it/to toughen oneself up

Example

As a Verb

beat; knock; strike

1
Bǎ
把
xiédǐ
鞋底
shàng
上
de
的
ní
泥
shuāi
摔
da
打
diào
掉
  
。

Beat the dirt off the sole of your shoes.

As a Verb

temper oneself (in adverse circumstances)

2
Qīngniánrén
青年人
yīnggāi
应该
dào
到
jiānkǔ
艰苦
de
的
huánjìng
环境
zhōng
中
qù
去
shuāida
摔打
  
。

Young people should temper themselves in difficult circumstances.