It means that circumstances changed.

这意味着环境改变了。

youdao

By 1991, nearly a decade after they had started the business, their circumstances changed.

到1991年，在她们从事这门生意10年之后，情况发生了改变。

youdao

This was not enough money to sustain either my mom or her partner when their circumstances changed.

情况发生改变之后，经营所得根本不足以维持我母亲和她搭档的生活。

youdao

The circumstances,borders and threats may have changed, but that commitment continues."

VOA: standard.2009.09.17

In many businesses, practices emerged with good reason, but once the circumstances changed, firms carried on using them for no reason whatsoever.

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Alan Connett had a ticket from Newton Abbot to London Paddington, but decided to board the train up the line at Exeter after his circumstances changed.

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Mr. Rubin said that while "obviously tax circumstances changed at the end of the year, " the timing of the deal had more to do with when the buyer and seller came together.

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