efficiency ·noun
Definition: when someone or something uses time and energy well, without wasting any Level: B2
他们社会最令人印象深刻的一点是公共服务的效率。
The impressive thing about their society is the ___efficiency of the public services.
这款新车型因其出色的燃油效率而受到好评。
This new model of car has been praised for its excellent fuel ___efficiency.
现代技术使商业活动能以更快的速度和更高的效率进行。
Modern technology allows business to be conducted with greater speed and ___efficiency.