The pivot on which the old system turned had disappeared.

维系旧制度的支柱已经消失了。

《牛津词典》

We need to ensure a smooth transition between the old system and the new one.

我们得确保新旧制度间的平稳过渡。

《牛津词典》

Under the old system in America, a mother was supposed to stay home and take care of her children.

在美国旧的社会体制下，母亲应该待在家里照顾孩子。

youdao

London may be famous for its red double-decker buses, but it is the underground system, parts of it more than a hundred years old, that is especially vulnerable.

VOA: standard.2010.04.01

Priests, these are the bishops of the old system, have changed their name to presbyters, perhaps, and they look like revolutionaries, but they're manipulative, controlling actions haven't essentially changed at all.

牧师，这些是旧制度的主教，或许已经把名字变为长老，他们看起来像革命者，但其实他们的操纵，控制的行为并没有改变什么。

耶鲁公开课 - 弥尔顿课程节选

But occasionally there is this one little remnant of the old CGS system, centimeters-gram-second, and this is one.

但是也有些例外,在原来的厘米克秒制中，还有我们说的这个。

麻省理工公开课 - 固态化学导论课程节选

PPP, one of two official opposition parties allowed under the old system, to threaten a walkout.

ECONOMIST: On democracy��s front line

Under the old system, hospitals were paid a block budget, so every patient represented a cost.

ECONOMIST: Health in Britain

Needless to say, the following season, the league went back to the old system.

NEWYORKER: Booted