彼(かの)女(じょ) kanojoは wa突(とつ)然(ぜん) totsuzen笑(わら)い()出(だ)し()た() waraidashita。 She suddenly burst out laughing. Literal She [topic-は] suddenly burst-out-laughing. 笑い出す: 笑う ('laugh') + ~だす ('suddenly start') — 'burst out laughing.' Captures the sudden onset, distinct from 笑い始める ('start to laugh,' more measured). laughtercompound verb~だす (start suddenly)
彼(かの)女(じょ) kanojoは wa突(とつ)然(ぜん) totsuzen笑(わら)い()出(だ)し()た() waraidashita。 She suddenly burst out laughing. Literal She [topic-は] suddenly burst-out-laughing. 笑い出す: 笑う ('laugh') + ~だす ('suddenly start') — 'burst out laughing.' Captures the sudden onset, distinct from 笑い始める ('start to laugh,' more measured). laughtercompound verb~だす (start suddenly)