errors occur frequently in complex calculations.
复杂计算中经常会出现错误。
accidents occur suddenly without warning.
事故会突然发生，毫无预兆。
changes occur naturally over time.
变化会随着时间自然发生。
the meeting occurs weekly on tuesdays.
会议每周二举行。
these problems occur often in development projects.
这些问题在开发项目中经常出现。
births occur daily at the hospital.
医院每天都有出生。
glitches occur simultaneously across all systems.
所有系统同时出现故障。
mistakes occur when people rush through work.
当人们匆忙工作时，容易出错。
the festival occurs annually in spring.
这个节日每年春天举行。
side effects occur rarely in clinical trials.
临床试验中很少出现副作用。
conflicts occur between different departments.
不同部门之间会发生冲突。
delays occur due to unforeseen circumstances.
由于不可预见的情况，会出现延误。
earthquakes occur primarily in seismic zones.
地震主要发生在地震带。
innovations occur when companies invest in research.
当公司投资研究时，会带来创新。
errors occur frequently in complex calculations.
复杂计算中经常会出现错误。
accidents occur suddenly without warning.
事故会突然发生，毫无预兆。
changes occur naturally over time.
变化会随着时间自然发生。
the meeting occurs weekly on tuesdays.
会议每周二举行。
these problems occur often in development projects.
这些问题在开发项目中经常出现。
births occur daily at the hospital.
医院每天都有出生。
glitches occur simultaneously across all systems.
所有系统同时出现故障。
mistakes occur when people rush through work.
当人们匆忙工作时，容易出错。
the festival occurs annually in spring.
这个节日每年春天举行。
side effects occur rarely in clinical trials.
临床试验中很少出现副作用。
conflicts occur between different departments.
不同部门之间会发生冲突。
delays occur due to unforeseen circumstances.
由于不可预见的情况，会出现延误。
earthquakes occur primarily in seismic zones.
地震主要发生在地震带。
innovations occur when companies invest in research.
当公司投资研究时，会带来创新。
探索常用高频词汇