有效减少的英语怎么说

"有效减少"的英文表达可以是 "effectively reduce" 或 "significantly reduce"。
"Effectively reduce" 的意思是有效地减少，即通过有效的方式使数量减少。
"Significantly reduce" 的意思是显著地减少，即通过显著的方式使数量减少。
下面是几个使用 "effectively reduce" 的例句：
The company implemented a new recycling program that effectively reduced waste by 50%.
（公司实施了一个新的回收计划，有效地将废物减少了 50%。）
The medication was able to effectively reduce the severity of the patient's symptoms.
（这种药物能有效地减轻病人的症状。）
The new energy-efficient appliances have effectively reduced our monthly energy bills.
（新的节能电器有效地减少了我们的月度能源账单。）
下面是几个使用 "significantly reduce" 的例句：
The new transportation policies have significantly reduced traffic congestion in the city.
（新的交通政策显著减少了城市的交通拥堵。）
The diet and exercise plan significantly reduced the participant's risk of developing diabetes.
（饮食和锻炼计划显著减少了参与者患糖尿病的风险。）
The company's new marketing strategy has significantly reduced the time it takes to close sales.
（公司的新营销策略显著减少了销售结束所需的时间。）