It beggars (=is beyond) (all) description. 非笔墨所能形容.

Beggars can [must] not be choosers [choosy]. 【谚】 要饭的哪能挑肥拣瘦(饥不择食)
Set a beggar on horseback and he'll ride to the devil. 【谚】 叫化子发财,忘乎所以(小人乍福必有祸)
If wishes were horses, beggars would ride.
a good beggar 善于募捐;会讨东西.

a saucy beggar 冒失鬼
(nice) little beggars (可爱的)小家伙(指幼儿、小动物)
Poor beggar! 可怜,可怜!
You little beggar! 你这个小坏蛋
die a beggar.