寝転(ねころ)ぶto lie down, to throw oneself down

お昼寝(ひるね)をするためにソファに寝転(ねころ)ぶ。

I lie down on the sofa in order to take a nap. {to lie down, to throw oneself down}

芝生(しばふ)の上(うえ)で寝転(ねころ)びながら夜空(よぞら)の観察(かんさつ)をする。

To lie down on the lawn and observe the night sky. {to lie down, to throw oneself down}

子供(こども)を寝(ね)かしつけるために一緒(いっしょ)にベッドに寝転(ねころ)ぶ。

To put the child to sleep, I lie down together in bed. {to lie down, to throw oneself down}

枕(まくら)がないとベッドの上(うえ)でも快適(かいてき)に寝転(ねころ)ぶことが出来(でき)ません。

Without a pillow, I can't comfortably lie down even on a bed. {to lie down, to throw oneself down}

ソファで寝転(ねころ)んでいたせいか、肩(かた)と腰(こし)が痛(いた)くなってしまいました。

Perhaps because I lay down on the sofa, my shoulder and waist ended up hurting. {to lie down, to throw oneself down}