Correct

兔子尾巴长不了

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/兔子尾巴长不了-Chinese-idioms-Cchatty-49acacfd-073e-4f21-9919-013c636d0ce9-1612776446.jpg

Collocation

1
俗语说兔子尾巴长不了
2
终究是兔子尾巴长不了
3
黑社会兔子尾巴长不了

Definition

兔子尾巴长不了

Literally means:

the tail of a rabbit can't be long

Actually means:

one's good times don't last long: something won't last long

Rabbits have short tails. The phrase metaphorically means that a person, thing or phenomenon will not last long. Derogatory.

兔子的尾巴很短。比喻某人、某事或某种现象不会长久存在或永远保持下去。具有贬义色彩。

Example

Used as a minor sentence, or as predicate or object. (作小句、谓语、宾语)
1
zi
兔子
wěiba
尾巴
cháng
le
  
,
hēishèhuì
黑社会
shìli
势力
chízǎo
迟早
shì
yào
bèi
kuǎ
打垮
de
  

Rabbit tails can't grow, and sooner or later the undersetary will be defeated.

2
Lǎobǎn
老板
bēi
le
shēn
一身
zhài
  
,
men
我们
zhège
这个
gōng
公司
kěndìng
肯定
zi
兔子
wěiba
尾巴
cháng
le
  
,
jiā
大家
háishi
还是
gǎnkuài
赶快
lìng
zhǎo
chū
出路
  

The boss carried a debt, our company is sure that the rabbit tail can not grow, we should quickly find another way.

3
Zhèxiē
这些
垃圾
shípǐn
食品
kàn
shì
zi
兔子
wěiba
尾巴
cháng
le
  
,
zuìzhōng
最终
shì
yào
bèi
gǎn
chū
shìchǎng
市场
de
  

These junk food I think the rabbit tail can not grow, and eventually to be thrown out of the market.