动词 “occur”
不定式 occur; 三单 occurs; 过式 occurred; 过分 occurred; 动名 occurring
- 发生
The power outage occurred during the storm last night.
- 想到
A funny story from last summer suddenly occurred to me while I was talking to my friend.
- 存在 (在特定地点或情况下)
Gold often occurs in quartz veins.