Number + 团 + Noun
团 (tuán) is a classifier used to describe a lump, ball, or mass of something. It is placed after a number and before a noun to indicate an amorphous clump of material, such as 一团纸 (a wad of paper) or 一团黄色的东西 (a mass of yellow stuff).
地上有一团纸,你捡起来吧。
Dì shàng yǒu yī tuán zhǐ, nǐ jiǎn qǐlái ba.
There's a ball of paper on the ground — pick it up.
她手里捏着一团泥巴在玩。
Tā shǒu lǐ niē zhe yī tuánníba zài wán.
She was squeezing a ball of mud in her hands and playing with it.
角落里有一团黑色的东西,看不清是什么。
Jiǎoluò lǐ yǒu yī tuán hēisè de dōngxi, kàn bù qīng shì shénme.
There's a dark clump of something in the corner — I can't tell what it is.