Errors often occur unexpectedly.
错误常常发生得出乎意料。
Accidents can occur anytime.
事故随时可能发生。
Earthquakes occur frequently in Japan.
日本经常发生地震。
Changes will occur over time.
变化会随着时间发生。
Problems occur when least expected.
问题在最意想不到的时候发生。
Rains occur during monsoon season.
雨季期间会发生降雨。
Breakdowns occur due to poor maintenance.
由于维护不善会发生故障。
Conflicts occur in every society.
每个社会都会发生冲突。
Miracles occur when you believe.
当你相信时，奇迹会发生。
Symptoms occur after infection.
感染后会发生症状。
occur to
发生；出现
occur to someone
被想到, 出现在头脑中
probably occur
可能出现；可能发生
第三人称单数: occurs;
过去式: occurred;
过去分词: occurred;
现在分词: occurring;
