1. 减少，变少，减轻，变小，缩小，减小
2. 使减轻，使变小，使变少，削减
3. 藐视
4. 贬低，轻视，看不起
5. 减缓，减弱
6. 下降
7. 暗下去
8. 渐渐西沉

1. decrease in size, extent, or range;

   "The amount of homework decreased towards the end of the semester"
   "The cabin pressure fell dramatically"
   "her weight fell to under a hundred pounds"
   "his voice fell to a whisper"
   

2. make smaller;

   "He decreased his staff"
   

3. wear off or die down;

   "The pain subsided"
   

1.（使）缩小；（使）减少；（使）减轻
If somethinglessens or youlessen it, it becomes smaller in size, amount, degree, or importance.

lessen

e.g. He is used to a lot of attention from his wife, which will inevitablylessen when the baby is born...
他习惯了妻子对他的百般关注，但孩子出生后这种关注就会不可避免地减少。
e.g. Make sure that your immunisations are up to date tolessen 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。

1. 减少(生产成本)：lengthen 延长 |lessen 减少(生产成本) | level 水平

2. 下降：上升:increase, rise ,ascend ,core, surge,go up, climb ,mount ,level... | 下降: decrease, fall, drop ,descend ,decline ,reduce ,lessen ,level down | 波动:fluctuate ,fluctuation ,rise and falls ,up and d...

3. lessen

3. 减少：lesson#功课 |lessen#减少 | return#回来

4. 使小;变小;减少：lesser更少的(地更小的(地) |lessen使小;变小;减少 | lesson教训, 训诫, 惩戒

• Amongst the lessening throng of dancers.

  出自：Percy White

• Soon the rain lessened.

  出自：D. Johnson

The Japanese should lessen their working hours.

日本人应该减少工作时数。

We should be able to lessen the damage to the city here.

在这里我们必须能够减少对这个城市的损坏。

This medcine can lessen the pain in no time.

这种药可以立刻减轻痛苦。

Regular exercise can help to lessen the pain.

经常运动有助于减轻痛感。

Coming back here didn't lessen my confusion and pain.

回来之后我的困惑和苦恼并没有减轻。

The noise began to lessen.

噪音开始减弱。

to lessen the risk'/impact'/effect of sth

减少某事物的风险 / 影响 / 效果

['u5355'u6570, 'u4e0d'u53ef'u6570'u540d'u8bcd]a lessening of tension

紧张状态的减缓

He is used to a lot of attention from his wife, which will inevitably lessen when the baby is born...

他习惯了妻子对他的百般关注，但孩子出生后这种关注就会不可避免地减少。

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。

Regular exercise can help to lessen the pain.

经常运动有助于减轻痛感.

My virtues will grow daily and my wrongdoings will lessen day by day.

我的德行日日会有进步,过失天天会减少.

The Japanese should lessen their working hours.

日本人应该减少工作时数.

When eaten raw may cause upset stomach . Cooking can lessen toxicity.

不能生食. 煮过可以使毒素消失.

Most of them focused on how to lessen the cost and better the efficiency.

其中大多数都把降低成本,提高运作效率作为目标.

Independent display unit lessen project cost and make interface variety.

设计了独立的显示单元,减少了工程造价.

I'm taking these apples out of the bag to lessen the load I have to carry.

我把这些苹果从包里拿出来以减少携带的重量.

But health campaigners fear that the details will lessen any impact theban might have.

但是推崇健康生活的人们担心,很多细节问题会削弱禁令的效果.

But with proper media mix we can certainly lessen the chance of failure.

但媒体组合选用得当的话,我们自然会降低失败的机率.

It would lessen resistance to firm action in the US.

这将减少美国国内在采取有力行动方面的阻力.

But she said it did lessen her desire to eat cabbages!

但她说,却使她不太愿意吃卷心菜了.

The peace talk lessen the tension of the two nations.

和平谈判降低了两国之间的紧张关系.

That does not lessen my commitment, however, to governments that reflect the will of the people.

但是, 我并不因此而减少我对代表人民意愿的政府的承诺.

Students suggested to reduce the number of BBQ sites so as to lessen the pollution problems.

同学亦建议减少公园内的烧烤场地,因烧烤活动经常为公园带来各种污染.

A, It is equiped with lubricating system to lessen wear and prolong service life.

没有自动供油润滑系统, 减少磨损,延长使用寿命.

It tends to lessen inequality among countries and increase it within them.

全球化减少国与国之间的贫富差距,但是却加剧了一个国家内部的不均衡现象.

Research in mice also suggests that drinking alcohol may help lessen the severity of the illness.

对老鼠的研究也证实了饮酒也许帮助减轻病症的严重程度.

The flexibility of a man's muscles will lessen as he becomes old.

人老了肌肉的柔韧性将降低.

When the water rose to the level of the front door, the storm began to lessen.

当水的高度上升到前门时, 暴雨开始减弱.

It is requirement of controlling irrigation water depth, lessen down water losing.

要控制灌溉水的入渗深度,尽量减少水分下渗损失, 节约用水,保护环境.

The added depth is designed to lessen resistance.

加大深度是设计来减缓阻力.

Use your seat belt to lessen the danger of injury in an accident.

系上座椅安全带,减少交通事故中受伤的危险.

The hand operation is a simple, easy to learn, to lessen and eradicate the symptoms.

手法操作简单, 便于掌握, 能达到缓解和消除症状的作用.

The noise began to lessen.

噪音开始减弱。

decrease，diminish，lessen，reduce，dwindle

这些词的共同含义是“减少，变少”。

decrease指逐渐地、不断地减少。

diminish侧重大小、数量和重要性的不断减小，强调减小的部分。

lessen普通用词，与decrease近义。指数目、程度、价值、实力等的减少。

reduce普通用词，含义广。指数量、程度的降低或减少。

dwindle与decrease同义，指逐渐减小，但强调变得越来越少终至全无。