B1 to become or to make something become smaller in size, amount, degree, importance, etc.减少;减小;降低;缩小
to heat a liquid until it becomes thicker and less in quantity; to become thicker and less in quantity in this way(通过加热)使(液体)变稠;(液体因加热而)变稠
More examples
The government has pledged to reduce the amount of chemicals used in food production.
Wearing the correct type of clothing will reduce the risk from radiation.
When one airline reduces its prices, the rest soon follow suit.
Mindful of the poor road conditions, she reduced her speed to 30 mph.
We are firmly committed to reducing unemployment.
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