我的狒狒有一个新的气球

Wǒ de fèifèi yǒu yīgè xīn de qìqiú.

狒狒

fèifèi, baboon. fèi – hamadryad, a mythical being that lives in a tree (lol).

气球

qìqiú, balloon. qì – gas. qiú – sphere.

新

xīn, new.

的

The possessive particle 的 de is used as an attributive. It connects the adjective 新 new to the noun 球 balloon. New-balloon, not new-baboon.