Correct

弟兄

/ dìxiong / 
Strokes

Definition

brothers/comrade

Example

As a Noun

brothers

1
Tāmen
他们
dìxiong
弟兄
liǎ
俩
shì
是
shuāngbāotāi
双胞胎
  
。

They are twin brothers.

2
Tā
他
méiyǒu
没有
dìxiong
弟兄
  
。

He is the only son of the family. / He has no brothers.