How to say “Half the keys on this keyboard have been sticking ever since my nephew spilled juice on it.” in Japanese

In Japanese

甥(おい)っ子(こ)がジュースをこぼしてから、このキーボード、半分(はんぶん)くらいのキーが引(ひ)っかかるんだよ。

Oikko ga jūsu o koboshite kara, kono kībōdo, hanbun kurai no kī ga hikkakarun da yo.