n.发生,出现;遭遇,事件;
例句:
Objective To study the occurrence , diagnosis and treatment of training trauma of anticraft artillery soldiers.
目的研究某高炮部队士兵训练伤的发病和诊治情况.
Complaints seemed to be an everyday occurrence...
似乎每天都有投诉。
Vandalism used to be a rare occurrence here.
过去这里很少发生故意破坏公物的事。