frequent occurrences 频繁发生
rare occurrences 罕见事例
sudden occurrences 突然发生
natural occurrences 自然现象
1. We recorded all the occurrences of the error.
我们记录了所有错误的发生情况。
2. These are unusual occurrences in this region.
这些在该地区是不寻常的事件。
3. The number of occurrences has increased recently.
发生的次数最近增加了。
A: How many occurrences of this phenomenon have you seen?
A：你见过几次这种现象？
B: I have noticed several occurrences in the last month.
B：我在上个月注意到了几次。
1) 发生，出现
2) 事件，事例
3) 发生的次数或频率
1. 发生；出现
e.g.
The rare occurrences of snow in this desert.
这种沙漠中罕见的降雪情况。
2. 事件；事例
e.g.
The historian studied various occurrences in the era.
历史学家研究了那个时代的各种事件。
noun
1. The fact or frequency of something happening.
Synonym: instances, events, happenings