At a certain stage it starts to boom.

在某个阶段，中产阶级就开始暴增了。

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These words merely denote a certain stage in the comprehension of phenomena.

这两个词只表示对现象的某种程度的理解。

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At a certain stage they begin to notice meaningful overlap and narrow down the choices.

在某个阶段，他们会开始注意有意义的重合，并缩小选择范围。

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And Freud believed, as well, that if you have a problem at a certain stage, if something goes wrong, you'll be stuck there.

弗洛伊德还认为，如果你在某一阶段遇到了阻碍，没能得到满足，你就会停留在这个阶段。

耶鲁公开课 - 心理学导论课程节选

Alzheimer's sufferers, at a certain stage in their illness, seem to have an urge to get out.

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Hospices are generally associated with cancer, where after a certain stage life expectancy is short and fairly predictable.

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He suggested that many companies with excellent technology got to a certain stage and then they or their backers lost confidence, selling up to American firms.

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