Based on the number of questions I get related to this, this seems to be a common occurrence.
与此相关的问题非常多,可见这是一个常见实践。
Again, improved instrumentation led to the finds. Which Lang says is a common occurrence in the world of skygazing.
朗说,像这种仪器的改进促使新的天文发现,在天文观测的历史中屡见不鲜。
This is a surprising fact, given that circular references are a common occurrence for almost any persistent object graph.
这很让人意外,因为循环引用几乎出现在所有的持久化对象图中。
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