efficient

1. Making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy.

   An efficient process would automate all the routine work.

   Our cleaners are almost too efficient: they throw away anything left out on a desk.

   effizient

   эффекти́вныйeffektívnyj

   ефекти́внийefektývnyj

2. Expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input.

   The motor is only 20% efficient at that temperature.

3. Causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression efficient cause = causative factor or agent).

   Ownership, maintenance, or use of the automobile need not be the direct and efficient cause of the injury sustained

4. (proscribed)Effective, efficacious

1. There must be a more efficient way to do this.

   Должен быть более экономный способ это сделать.

   deDafür muss es einen effizienteren Weg geben.

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2. You're very efficient.

   Ты очень эффективен.

   ukТи дуже здібний.

   deDu bist sehr tüchtig.

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3. Tom is very efficient, isn't he?

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4. Tom isn't very efficient, is he?

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5. You seem to be very efficient.

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правильный