lessen
单词辨析：
指变少或降低水平。
The local government has adopted effective measures to decrease unemployment.
当地政府已经采取有效措施减少失业人数。
Her temperature decreased.
她的体温下降了。
指大小、数量不断减小，也可引申为贬低某事物的重要性或价值。
The company planned to diminish the cost of production.
公司计划减少生产成本。
Water in the pond gradually diminished due to lack of rainfall.
由于缺少降雨，池塘里的水逐渐减少。
His comments were only said to diminish the importance of her discoveries.
他的评论就是为了贬低她的发现的重要性。
指程度、规模等减少，也可指降低某事物的可能性、影响等。
Her anxiety lessened while listening to the music.
听音乐的时候，她的焦虑减轻了。
Exercise lessens the risk of heart disease.
进行锻炼可降低患心脏病的风险。
The program has lessened the effects of car pollution.
该计划降低了汽车污染的影响。
指降低价格、数量、规模等。
We should take measures to reduce the price.
我们应该采取各种措施来降低物价。
A plan to reduce crime was announced recently.
最近宣布了一项降低犯罪率的计划。
指减轻事情的恶劣程度、身心痛苦等。
plans to ease congestion in the city
改善城市拥塞状况的计划
This kind of medicine can ease your pain.
这种药可以减轻你的疼痛。
通常指减轻恐惧、担心、怀疑等。
His arrival allayed her fear.
他的到来减轻了她的恐惧。
We hope this statement will allay the public's concern.
我们希望这一声明会减轻公众的担忧。
指减轻疼痛、痛苦、难度等。
It is said that this medicine can alleviate pain.
据说这种药物能够缓解疼痛。
I could only alleviate the sorrow by drinking.
我只能借酒浇愁。
指减轻痛苦，或降低风险、重要性等。
This medicine can lessen pain in no time.
这种药可以立刻减轻痛苦。
She tried to lessen his importance at work.
她试图淡化他在工作中的重要性。
Their bravery has not lessened.
他们的勇气并未消减。
相关例句：
Make sure that your immunisations are up to date to lessen the risk of serious illness.
要确保接种最新的疫苗，以降低患上严重疾病的危险。
This medcine can lessen the pain in no time.
这种药可以立刻减轻痛苦。
Shows you how to lessen financial worries.
告诉你如何减少金融方面的忧虑。
Its very important to lessen the distraction and burden from your mind.
这对分散注意力，减轻负担来说很重要。
The length of the menstrual cycle and periods may vary; flow may lessen or increase.
月经周期和持续时间因人而异，经血流量可能减少或增加。
The warning came with recommendations to prevent drought or lessen its effects.
提出警告的同时，专家还提出了预防干旱或缓解干旱影响的建议。