在该系统投入使用前，设施的水都是由电热水器加热的，非常浪费而且低效。

Before the system was put in, the hot water from the facility was generated from electrical water heater. It's very wasteful and inefficient.

youdao

然而，如果重建工作被认为是低效或者由于官僚瓶颈而导致滞后，那么，就会有人冷嘲热讽，而且如此慷慨的捐赠在数十载之后才可能出现。

But if reconstruction is seen to be inefficient or delayed by bureaucratic bottlenecks, cynicism will set in and it may be decades before such generosity will be seen again.

youdao

尽管这种方法比较简单，但是却比较低效、缺乏可扩展性而且不适合用在实时系统中。

Although this approach was relatively simple, it was relatively inefficient, lacked scalability, and was weak for real-time systems.

youdao