bed

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bed的基本意思是“床,床铺”,包括床架、床垫、毯子、床单、枕头等。也可指某种东西的“底盘”“底座”等,还可指房屋的“地基”。可引申指“房事”,在日常口语或在公开场合可作委婉语使用。
bed可用于表示抽象概念,这时是不可数名词,无单复数之分,也不与不定冠词连用。
bed与介词in, into, out of等连用时通常不用冠词或其他限定词；与介词on连用时通常要有冠词。
一般说来，躺在床上的习惯用语是in bed，但是如果说躺在某张床上，可用介词in或者on，例：on/in this bed或on/in the same bed；
go to bed是习惯用语，意思就是“睡觉”“就寝”。bed前不加任何指示代词，go to the bed，go to my bed等均属不正确表达方式；
值得注意的是，这里的bed意思不仅指“床，即使睡地上，也可以说go to bed；
bed的很多短语中都不含the，如take to bed，put to bed，get into bed，lie in bed和out of bed等。

(FURNITURE) a large, rectangular piece of furniture, often with four legs, used for sleeping on
(BOTTOM) the bottom of something, or something that serves as a base
(AREA OF GROUND) a piece of ground used for growing plants outside
(PUT) to put something firmly into a substance or into the ground
(SEX) to have sex with someone

A bed is a piece of furniture that you lie on when you sleep.
If a place such as a hospital or a hotel has a particular number of beds, it is able to hold that number of patients or guests.
A bed in a garden or park is an area of ground that has been specially prepared so that plants can be grown in it.
A bed of shellfish or plants is an area in the sea or in a lake where a particular type of shellfish or plant is found in large quantities.
The sea bed or a river bed is the ground at the bottom of the sea or of a river.
A bed of rock is a layer of rock that is found within a larger area of rock.
If a recipe or a menu says that something is served on a bed of a food such as rice or vegetables, it means it is served on a layer of that food.
On a vehicle such a truck or a pickup, the bed is the long, flat part at the back where goods are carried.
&rarrsee also bedding
To go to bed with someone means to have sex with them.
When you make the bed, you neatly arrange the sheets and covers of a bed so that it is ready to sleep in.
bed of roses&rarrsee rose