发生事故后,首要任务是确认人员是否安全。Fāshēng shìgù hòu, shǒuyào rènwu shì quèrèn rényuán shìfǒu ānquán.After an accident, the primary task is to confirm whether people are safe.
对学生来说,首要的事情是养成好的学习习惯。Duì xuéshēng lái shuō, shǒuyào de shìqing shì yǎngchéng hǎo de xuéxí xíguàn.For students, the most important thing is to form good study habits.
安全是旅行中首要考虑的问题。Ānquán shì lǚxíng zhōng shǒuyào kǎolǜ de wèntí.Safety is the first thing to consider when travelling.