乗(の)り出(だ)すto set out, to set sail, to embark on (a new venture), to set out (to achieve something), to begin to ride, to lean forward

弟(おとうと)はバイクをやめて自動車(じどうしゃ)に乗(の)り出(だ)しました。

My younger brother gave up his motorcycle and began to ride a car. {to set out, to set sail, to embark on (a new venture), to set out (to achieve something), to begin to ride, to lean forward}

子供(こども)たちが身(み)を乗(の)り出(だ)してショーを観戦(かんせん)しています。

The children are leaning forward to watch the show. {to set out, to set sail, to embark on (a new venture), to set out (to achieve something), to begin to ride, to lean forward}

船長(せんちょう)と船員(せんいん)合(あ)わせて２０人(にじゅうにん)を乗(の)せた船(ふね)が大(おお)海原(うなばら)に乗(の)り出(だ)した。

A ship carrying 20 people, including the captain and crew, set sail on the open sea. {to set out, to set sail, to embark on (a new venture), to set out (to achieve something), to begin to ride, to lean forward}

探偵(たんてい)として不倫(ふりん)の調査(ちょうさ)に乗(の)り出(だ)してすぐに、決定的(けっていてき)な証拠(しょうこ)をおさえた。

As a detective, as soon as I embarked on the investigation of the affair, I secured decisive evidence. {to set out, to set sail, to embark on (a new venture), to set out (to achieve something), to begin to ride, to lean forward}

俳優(はいゆう)として成功(せいこう)したからといって政界(せいかい)にまで乗(の)り出(だ)すとは…意欲(いよく)的(てき)な人(ひと)です。

Just because they succeeded as an actor, to even embark on the political stage... they are an ambitious person. {to set out, to set sail, to embark on (a new venture), to set out (to achieve something), to begin to ride, to lean forward}