2 sentences for 团 (tuán — ball)

1. 猫在地上玩一个毛线团。

   māo zài dì shàng wán yī gè máo​xiàn tuán.

   The cat is playing with a ball of yarn on the floor.

   Source: Dong Chinese Dictionary

2. 奶奶把买来的毛线绕成一团，准备给刚出生的孙子织一件毛衣。

   nǎi​nai bǎ mǎi​lái de máo​xiàn rào chéng yī tuán, zhǔn​bèi gěi gāng chū​shēng de sūn​zi zhī yī jiàn máo​yī.

   Grandma wound the yarn she bought into a ball, preparing to knit a sweater for her newborn grandson.

   Source: Dong Chinese Dictionary