occurvi.发生；存在；出现；想到occur and development发生和发展Occurring by chance.偶然发生的occur from time to time时有发生occurring area forecast落区预报occuring intermittently间歇地发生Occur for the first time前无此例,事情头回出现Occurring characteristic发生特点occurring twice a week.一个星期发生两次的。occurremce and harmfulness发生危害Occurring one after anther相继发生

1. Check fire hazards to prevent fire from occurring.
   检查是否有着火的危险，以预防火灾的发生。
2. Thankfully, there is no sign of this occurring yet.
   谢天谢地，现在还没有发生这种情况的迹象。
3. Method ignores a slash mark occurring at the end of the path.
   方法忽略出现在路径结尾处的斜杠标记。
4. The possibility of its occurring in states of affairs is the form of an object.
   对象出现在诸事态中的可能性就是对象的形式。