例句：Costs have been reduced by 20% over the past year.
The skirt was reduced to ￡10 in the sale.
It reduces the risks of heart disease...
They were reduced to extreme poverty.
He was reduced to begging for a living.
All the buildings in the town have been reduced to rubble...
Boil the liquid in a small saucepan to reduce it by half...
Her challenge reduced them to silence.
例句：There has been some reduction in unemployment.
There are reductions for children sharing a room with two adults.
She became a casualty of the reduction in part-time work.
There has been some reduction in unemployment.
They received a benefit in the form of a tax reduction.