用: to use, to employ, to have to, to eat or drink, expense or outlay, usefulness, hence, therefore...
一旦: in case (sth happens), if, once (sth happens, then...), when, in a short time, in one day...
时刻: time, juncture, moment, period of time, constantly, always...
主任: director, head...
惹: to provoke, to irritate, to vex, to stir up, to anger, to attract (troubles), to cause (problems)...
老年: elderly, old age, autumn of one's years...
空难: air crash, aviation accident or incident...
