to suddenly start laughing loudly
突然大きな声で笑い出す (totsuzen ōkina koe de warai dasu)
"They burst into laughter after hearing the funny story."
"彼らは面白い話を聞いて、突然大きな声で笑い出しました。" (karera wa omoshiroi hanashi o kiite, totsuzen ōkina koe de warai dashimashita)
to help someone recover from sadness or depression
to start liking someone or something
to switch to another app, tab, or platform
to start a journey to a specific place
to let fresh air into a place to remove bad smells
to resolve confusion or misunderstanding