[xiān hòu]
（先和后） early or late; priority; order
Things should be taken up in order of priority.
办事应有个先后次序。
The manager will interview the candidates in order of arrival.
经理将按（到达）先后次序接见这些应征者。
（前后相继） successively; one after another
The school team won five games successively.
校队先后胜了5场球。