efficiency词根词缀

efficiency

[ɪˈfɪʃnsi]

n.效率，效能;实力，能力;[物]性能;功效;

复数： efficiencies

例句:

1、

We were most impressed with your efficiency.

你的效率给我们留下很深刻的印象.

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2、

The former one can assure fairness and the later efficiency.

前者能够保证公平,后者有利于提高效率.

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3、

Friction lowers the efficiency of a machine.

摩擦减低机器的效率.

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