IN WATER 在水里, [I] to go down below the surface of water, mud etc

下沉，沉没;

Their motorboat struck a rock and began to sink.

他们的摩托艇触了礁，开始下沉。

The kids watched as the coin sank to the bottom of the pool.

孩子们看着那枚硬币沉到池底。

The heavy guns sank up to their barrels in the mud.

这些沉重的大炮深陷在泥里，只露出炮管。

BOAT 小船, [T] to damage a ship so badly that it sinks

使〔船〕沉没:

A luxury yacht was sunk in a bomb attack yesterday.

一艘豪华游艇在昨天的炸弹袭击事件中被击沉了。

MOVE LOWER 降低, [I] to move downwards to a lower level

下降，降低〔至某一高度〕:

The sun was sinking behind the coconut palms.

太阳西下，渐渐沉入椰子树后。

Her chin sank onto her chest, and she looked despairing.

她下巴耷拉到胸前，显得很绝望。

FALL / SIT DOWN 倒下/坐下, [I] to fall down or sit down heavily, especially because you are very tired and weak

倒下; 颓然坐下〔尤因非常疲倦或虚弱〕:

She let out a groan and sank into a chair.

她呻吟了一声，颓然倒进椅子里。

He let go of her shoulders and she sank at once to the floor.

他松开她的肩膀，她顿时倒在地板上。

Marion sank down on a rock, and wept.

玛丽昂倒在一块岩石上，哭了起来。

The minister sank to his knees (=he went down into a kneeling position) and prayed.

牧师跪下来祷告。

GET WORSE 变坏, [I always + adv / prep] to gradually get into a worse condition

衰退，恶化:

They lost all their money and sank into desperate poverty.

他们赔光了所有的钱，变得一无所有。

The good mood left me and I sank into depression.

好心情离我而去，我陷入沮丧之中。

The doctor said that the boy was sinking fast (=getting weaker and about to die) .

医生说那男孩的病情在急剧恶化。

your heart sinks also your spirits sink, used to say that you lose hope or confidence

心情沉重，情绪低落〔用于表示失去信心或希望〕:

His heart sank the way it always did when she left him.

他心情沉重，她离开他时他总是这样。

She felt desperately tired, and her spirits sank.

她感到筋疲力尽，情绪低落。

LOWER AMOUNT / VALUE 数量减少/价值降低, [I] to go down in amount or value

减少，降低;

Shares in the company have sunk as low as 620p.

这家公司的股票跌到了 620 便士的低点。

The population of the village sank to just a few families.

这个村子的人口已经减少到只剩几户人家了。

VOICE 声音, [I] [written] if your voice sinks, it becomes very quiet

降低:

Her voice sank to a whisper.

她的声音弱得成了耳语。

sinking feeling, [informal] the unpleasant feeling that you get when you suddenly realize that something bad is going to happen

不祥的感觉，颓丧感:

I had a sinking feeling inside as I realized I was going to fail yet again.

我意识到自己又要失败，心里不安。

be sunk, [spoken] to be in a situation where you are certain to fail or have a lot of problems

陷入麻烦:

If I don't get paid by next week, I'll really be sunk.

下星期再拿不到工资的话，我就惨了。

sink without trace, [especially BrE] also sink like a stone [especially AmE] if something sinks without trace, it fails quickly or no one pays attention to it

〔某物〕很快失败; 无人问津:

He made a few records which all sank without trace.

他录过几张唱片，但都无人问津。

sink so low also sink to doing sth, to be dishonest enough or SELFISH enough to do something very bad or unfair

不诚实（自私）到这种地步，堕落到干出这种事来;

How could he have sunk so low?

他怎么会堕落到这种地步？

USE SOMETHING SHARP 使用锋利的东西, [T] to put your teeth or something sharp into someone's flesh, into food etc

用〔牙〕咬;用〔尖锐的东西〕戳（捅）:

The dog sank its teeth into my arm.

那条狗在我的手臂上咬了一口。

She sank her fork into the pie.

她把叉子插进馅饼里。

DIG INTO GROUND 挖进地里, [T] if you sink something such as a well or part of a building, you dig a hole to put it into the ground

挖，掘〔井、洞等〕:

A well was sunk in the back garden, and water could be pumped up into the kitchen.

后花园里挖了口井，可以把水抽上来送到厨房。

sink or swim, to succeed or fail without help from anyone else

沉浮全凭自己，成败全靠自己:

They don't give you a lot of guidance – you're just left to sink or swim, really.

他们不会给你很多指导 — 成败全靠你自己，真的。

MONEY 钱, [T] to spend a lot of money on something

投入，投下〔大量金钱〕:

They sank their entire savings into their house.

他们把全部存款都投到他们的房子上了。

BALL 球, [T] to put a ball into a hole or BASKET in games such as GOLF or BASKETBALL

将〔球〕击入洞中; 将〔球〕投入篮中

sink your differences, [BrE] to agree to stop arguing and forget about your disagreements, especially in order to unite and oppose someone else

摒弃分歧，摒除歧见〔尤指为了联合对付别人〕:

Nations must sink their differences to achieve greater security.

各国必须摒弃分歧，才能获得更高程度的安全。

DRINK 喝, [T] [BrE informal] to drink alcohol, especially in large quantities

〔尤指大量地〕喝〔酒〕:

We sank a few pints at the pub first.

我们先在酒馆里喝了几品脱啤酒。

a large open container that you fill with water and use for washing yourself, washing dishes etc

面盆; 洗涤槽; 洗碗池;

Dirty plates were piled high in the sink.

脏盘子在洗涤槽里堆得很高。

sink estate / school, [BrE] an area where people live or a school that is in a very bad condition and seems unlikely to improve

垃圾住宅区/学校:

Go to almost any city and you find sink estates where you get the feeling that the council hates the place and the people too.

几乎到每一个城市你都会发现有一些垃圾小区，让人感觉当地的市政会讨厌那里，也讨厌那里的人。