HSK 6 HSK V7-9
Correct

层出不穷

/ céng chū bù qíong / 
Strokes

Definition

more and more emerge/innumerable succession/breeding like flies (idiom)

Example

Definition

emerge in an endless stream; appear successively/repeatedly; appear/follow one after another; come out in an unending flow

1
Zài
在
gǎigé
改革
de
的
làngcháo
浪潮
zhōng
中
  
,
xīnxiān
新鲜
shìwù
事物
céngchūbùqíong
层出不穷
  
。

A succession of new things have emerged in the reform drive.

2
Xīn
新
sīxiǎng
思想
céngchūbùqíong
层出不穷
  
。

New ideas followed fast upon one another.