v. come to one's mind; suggest itself
v. to be found to exist
vi. 发生, 被想到, 存在
1. The meeting will occur next Monday at 10 AM.
会议将于下周一上午10点举行。
2. Accidents can occur when people are not paying attention.
当人们不专心时，事故可能会发生。
3. Changes in the weather can occur unexpectedly.
天气变化可能会意外发生。