如果头痛只发生在晚上，缺少新鲜空气和氧气常常是其原因。

If headaches only occur at night, lack of fresh air and oxygen is often the cause.

《柯林斯英汉双解大词典》

他们就是这种很有意思的人，我常常想到他们，因为谁都不会再见到他们，也不会知道后来发生了什么。

That is the sort of very interesting people, and I think of them so often because one will never see them again, never know what happened next.

youdao

这两种愿望常常配合得很好，但它们偶尔也会发生冲突。

While these two desires often work well together, they occasionally come into conflict.

youdao

So this is why you sometimes had Jews getting in trouble with local groups and had violence with Jews in different places.

所以犹太人常常与当地人发生冲突,在各地都发生涉及犹太人的暴力事件。

耶鲁公开课 - 新约课程节选

It's often fanciful; it relates imaginatively events which it claims Happened in historical time, not in a primordial realm before time, And a myth is designed to explain some kind of practice or ritual or custom or natural phenomenon.

它常常天马行空，关乎一些想象中的事件,它们发生在有历史记载的时期，不是在史前原始王国，所以杜撰故事一般都是来解释一些惯例,或者仪式和风俗或者自然现象。

耶鲁公开课 - 旧约导论课程节选