定义
to occur: 发生，出现
Several things occurred while we were playing ping-pong.我们打乒乓球时发生了几件事情。
According to statistics, in France, a domestic fire occurs every 2 minutes.据统计，在法国每隔2分钟就会发生一次火灾。
- "I'll keep you posted on any developments, as and when they occur."
- "A shipment of perfume was being transported to São Paulo when the accident occurred."
- "I would have replied earlier, however my accounting obligations prevented me from checking my email until the early afternoon, and then an unfortunate incident occurred during my bathroom break, when my necktie got caught in the zipper of my pants."
- "I think I would prove particularly helpful during your periods of extended absence, as well as during "sleepy time", which, if I understood correctly, occurs nearly every afternoon."
- "I can tell you with certainty that this is the first time that such an event has occurred at the Golden Gate Gourmet, and it will undoubtedly be the last."
