to receive someone's help, care, or favor; to be looked after or indebted to someone (polite: お世話になる).
入社してから先輩には本当に世話になりました。
Since joining the company, I have really been helped by my seniors.
引っ越しのときは友人に世話になった。
My friends helped me a lot when I moved.
これからお世話になります。どうぞよろしくお願いします。
I will be in your care from now on. Thank you in advance (polite greeting when joining a company or team).
入院中は看護師さんに世話になった。
I was taken care of by the nurses while I was hospitalized.