ruinarla

Verb

accusative form-of infinitive object-feminine object-singular object-third-person

ruinarの不定詞にlaを結合した形

English Meaning

infinitive of ruinar combined with la

Si no tienes cuidado, podrías ruinarla en poco tiempo.

気をつけなければ、すぐにそれを台無しにしてしまうかもしれません。

If you're not careful, you could ruin it in no time.