“reduce”在英语中是一个多功能词汇，可以用作及物动词和不及物动词，以下是其详细解释及英文例句：

一、作及物动词

含义：减少；降低；使处于；把……分解。

英文例句：

The government is looking to reduce inflation.（政府正在力求降低通货膨胀率。）

They hope to reduce unit costs through extra sales.（他们希望通过额外销售降低单位成本。）

The company must reduce costs to compete effectively.（公司要有效地参与竞争必须降低成本。）

People should eat less fat to reduce the risk of heart disease.（人们应该少吃脂肪以减少患心脏病的风险。）

二、作不及物动词

含义：减少；缩小；归纳为。

英文例句：

Costs have been reduced by 20% over the past year.（过去一年，各项费用已经减少了20%。）

She was reduced to tears by their criticisms.（他们的批评使她流下了眼泪。）