Correct

够劲儿

/ gòu jìnr /
Strokes

Example

As an Adjective

potent; strongly effective; really strong/powerful

1
Zhè
jiǔ
zhēn
gòu
jìnr  
劲儿
  

The liquor is really strong/potent.

2
gòu
不够
jìnr  
劲儿

not strong enough

As an Adjective

too much (to handle); enough (of a burden)

3
yào
gōng
攻读
xuéwèi
学位
yòu
yào
dài
liǎng
háizi
孩子
  
,
zhēn
gòu
jìnr  
劲儿
  

It's enough of a burden to study for a degree and to take care of two kids at the same time.