Correct

三结合

/ sān jiéhé / 
Strokes

Definition

triple combination

Example

As a Noun

three-in-one combination

1
Lǎozhōngqīng
老中青
sānjiéhé
三结合
de
的
jiàoxué
教学
duìwǔ
队伍
  
/
lǐngdǎobānzi
领导班子
  
/
kēyán
科研
xiǎozǔ
小组

teaching staff/leading body/research group composed of the old, the middle-aged and the young