Fāshēng / shìgù / hòu / dāngshìzhě / yīngdāng / jíshí / xiàng / jǐngfāng / shuōmíng / qíngkuàng发生事故后,当事者应当及时向警方说明情况。After the accident, the people involved should promptly explain the situation to the police.