夜中(やちゅう)during the night, at night

夜中(やちゅう)の学校(がっこう)には誰(だれ)もいません。

There is no one at the school in the middle of the night. {during the night, at night}

僕(ぼく)は暗(くら)いのが嫌(きら)いだから夜中(やちゅう)も嫌(きら)いだ。

I dislike the darkness, so I also dislike the middle of the night. {during the night, at night}

夜中(やちゅう)は飼(か)い猫(ねこ)の目(め)がきらりと光(ひか)って見(み)えます。

In the middle of the night, the eyes of the pet cat can be seen shining brightly. {during the night, at night}

夜中(やちゅう)に子供(こども)を外(そと)で遊(あそ)ばせたら犯罪(はんざい)に巻(ま)き込(こ)まれかねない。

If you let your child play outside in the middle of the night, they could potentially get involved in a crime. {during the night, at night}

大人(おとな)になるに伴(ともな)って、夜中(やちゅう)の暗闇(くらやみ)が怖(こわ)いと感(かん)じなくなりました。

As I grew up, I stopped feeling scared of the darkness in the middle of the night. {during the night, at night}