coltish

那个年轻女孩的动作像小马驹一样充满活力。

The young girl's ___coltish movements were full of playful energy.

那个男孩像小马驹般在房间里蹦蹦跳跳，不小心打翻了一个花瓶。

The boy moved around the room in a ___coltish manner, accidentally knocking over a vase.