efficiency可數嗎

It was achieved with minimum fuss and maximum efficiency.

它以最少的慌亂和最高的效率被做到了。

Defrost the fridge regularly so that it works at maximum efficiency.

定期給冰箱除霜能取得最大效率。

Our administrator is a paragon of neatness, efficiency, and reliability.

我們的.管理者是整潔、高效、真實可信的傑出典範。