см. тж. эффективный

This is a worthwhile investment.

Hospital referral for further investigation is indicated.

Because of the high neutron output associated with deuterium-tritium fuel, a heat-cycle conversion system would be appropriate.

Suitable (or Advisable, or Expedient, or Efficient) methods for other vitamins are referred to in Table 1.

Источник: Русско-английский научно-технический словарь на Gufo.me