It would also allow older coal plants to remain in operation longer and result in an increase of particulate matter.

但该规定允许老旧的燃煤电厂继续运营，势必增加空气中颗粒物的含量。

The interesting doubt is as to whether the laws of motion will remain in operation until to-morrow.

有趣的疑问是运动定律是否会一直有效到明天。

However, with elevator cars moving very slowly and numerous instances of passengers becoming crushed or losing limbs, Paternosters were phased-out by the 1970s and less than 300 examples remain in operation today.

然而，由于这种电梯移动非常缓慢，导致乘客被压伤或失去肢体的事故层出，到 20 世纪 70 年代，Paternosters 被逐步淘汰，至今仍在使用的只有不到 300 个。

The only reason for believing that the laws of motion will remain in operation is that they have operated hitherto, so far as our knowledge of the past enables us to judge.

相信运动定律将继续运作的唯一理由是，就我们过去的知识使我们能够做出判断而言，它们迄今为止一直在运作。