灾害zāi hài
disastrous damage, scourge紧急jǐn jí
urgent, emergency预防yù fáng
to prevent, to take precautions against刹车shā chē
to brake (when driving), to stop刺cì
thorn, splinter, to stab, to pierce变故biàn gù
an unforeseen event, accident失踪shī zōng
missing, lost, unaccounted for当心dāng xīn
to take care, to look out