B1 working or operating quickly and effectively in an organized way效率高的;有能力的;有效的;生效的
More examples
Modern-day engines are so much more efficient.
Debbie is directly responsible for the efficient running of the office.
Bicycles are a cheap and efficient form of transport.
Recent medical discoveries are already pointing the way to more efficient vaccines.
We could reduce our costs by developing a more efficient distribution network.
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