efficiency
US /ɪˈfɪʃ.ən.si/
UK /ɪˈfɪʃ.ən.si/

1.
效率, 效能
the state or quality of being efficient
:
•
The new system improved the efficiency of the production line.
新系統提高了生產線的效率。
•
We need to increase our energy efficiency.
我們需要提高能源效率。
效率, 效能
the state or quality of being efficient