1.   A triangle is an efficient system of emotional checks and balances, allowing chil-dren to work out complicated feelings without volatile outbursts.

2.   Inventing an economically efficient system for counting and cutting emissions that encompasses the public and private sectors, is the biggest challenge.

3.   It is concluded that AI based systems have great potential in offering support to efficient system failure diagnostics.

4.   Thieves could evade an efficient system by taking stolen cattle to another district for sale.

5.   We need a more efficient system for collecting money.

6.   Without an efficient system and good professional advice, unforeseen problems can develop into major setbacks.

7.   He developed an efficient system for movement of raw materials to the factory.

8.   The clearing system, being nationwide and increasingly computerized, makes for a very efficient system of transmitting payments.