John promises well as an actor.（英译中)

Prolonged high unemployment will threaten the current leadership in other capitals as well, and it could ignite violent upheavals in some of the most hard－pressed land.（英译中)

The importance of oceanography as a key to the understanding of our planet is seldom as well appreciated.（英译中)

The airport authorities have promised to review their security measurements.（英译中)

I promise to return your bicycle on good condition.（英译中)

The government has promised to take measures to help the unemployed.（英译中)

You must keep your promise.（英译中)