shì / gù / fā / shēng / hòu / yuán / běn / píng / jìng / de / jú / shì / cǎn / biàn / dà / jiā / dōu / shí / fēn / dān / xīn

事故发生后，原本平静的局势惨变，大家都十分担心。

After the accident, the previously calm situation took a disastrous turn, and everyone was very worried.