Correct

不冷不热

/ bù lěng bù rè /
Strokes

Example

Definition

neither hot nor cold; lukewarm; tepid

1
ZhèÉr
这儿
De
Tiān
天气
Nián
一年
四季
Dōu
Lěng
不冷不热
  
,
Hěn
Huān
喜欢
  

We have temperate weather here all year round; that's really to my liking.

2
Gōngzhòng
公众
duì
zhège
这个
jiàn
建议
de
fǎnyìng
反应
lěng
不冷不热
  

Public response to the proposal was lukewarm.

3
duì
tóngshì
同事
zǒngshì
总是
lěng
不冷不热
de
  

He always assumes a lukewarm attitude towards his colleagues.