Change for change's sake is stupid and enervating.

为改变而改变是愚蠢而徒劳无功的。

After the operation she had been enervating for several hours.

手术后她已经虚弱几个小时了。

Those were miserable, enervating months - all of which I spent stuck inside my mother's house.

我腻在我妈妈家里的那几个月真是悲惨又萎靡的几个月。

The air of the place, so fresh in the spring and early summer, was stagnant and enervating now.

这个地方的空气，在春天和初夏都非常清新，而现在却变得呆滞和使人困倦了。

The downside: The city is still unaffordable for many, and the less-pricey suburbs can impose enervating commutes.

不利方面：对许多人来说生活成本仍然太高，郊区房价虽然没那么贵，但上下班很累。