sun用作动词的意思是“晒太阳”,是及物动词,多和反身代词连用。

用作及物动词
▲S+～+n./pron.
They sunned themselves on the beach.他们在海滩上晒太阳。
She sat sunning herself in the garden.她坐在花园里晒太阳。

［派生词］ sunless adj. 不见太阳的,阴暗的
［同义词］ n.  daystar, star, sunshine v.  bake, brown, take the sun, tan
［词源］  ＜古英语sunne＜拉丁语sol(太阳)

1.sun的基本意思是“太阳”,指位于太阳系中心的天体,多用于单数形式,并常与定冠词the连用,有形容词修饰时可加不定冠词,表示“某种状态的太阳”。
2.sun也可作“日光,阳光”解,只用作单数形式,与定冠词the连用,引申可表示“向阳处”。
3.sun还可作“恒星”解,是可数名词,其前不用定冠词。

a place in the sun
显要的位置,成功 a fortunate position which gives favourable chances in life
The new generation of writers has achieved a place in the sun.新一代的作家已功成名就。
They decided it was time to give him a place in the sun.他们决定,是该给他一个重要职位的时候了。

as...as the sun shines on
世界上最…的 the best sb/sth in the world
He is as kind a man as the sun shines on.他是世界上少有的好人。

catch the sun
晒黑 be tanned
She went on the beach for the first time this year and caught the sun all over her back.她今年第一次去海滨,结果她的背全晒黑了。

go round the sun to meet the moon
绕大弯 go the very long way round
The best bus to go by is number ６３.A number ８３ will also take you there, but that goes round the sun to meet the moon.最好是乘63路,83路也可以到,但绕了个大弯。

in the sun
在阳光下 under the sunshine
The cat likes to sit in the sun.猫爱晒太阳。
The clothes are drying in the sun.衣服在阳光下晒干。

touch of the sun
有点中暑,有点病痛 illness or slight sadness caused by overexposure to the heat of the sun
Since he came back from India, the Colonel has been suffering from a touch of the sun.自从那位上校从印度回来,他一直有点中暑。

under the sun
全世界的,在世界上; 到底,究竟 everywhere; in the world; at all
I'm sure that he must have visited every country under the sun.我敢肯定,他一定到过世界上每一个国家。
The president's assassination shocked everyone under the sun.总统遇刺使全世界都为之震惊。
I have looked everywhere under the sun for my pencil.我到处都找过我的铅笔了。
Where under the sun could I have put the purse?我究竟把钱包放在哪儿了?

with the sun
随着太阳; 在太阳升起〔落山〕时 at dawn or sunset
He gets up with the sun.他日出时起床。
He goes to bed with the sun.他日落时就寝。

The sun glared on the sea.太阳在海上发出令人目眩的光芒。
There I saw the glorious beams of the rising sun.在那里我看见了初升太阳的光芒。
The rays of the late sun slanted in streams through the cypress trees.夕阳的光线一缕缕地从柏树林中斜穿过来。
The sunflower turns towards the sun.葵花向太阳。
It was the first of August, a perfect day, with a burning sun and a cloudless sky.八月一日这天,阳光普照,万里无云。
The room never gets any sun at all.这个房间从来不见阳光。
I've had too much sun,I don't feel very well.我晒太阳的时间太长了,觉得不大舒服。
She was sitting in the sun reading a book.她坐在阳光下读书。
I closed my eyes and felt the warmth of the sun on my face.我闭上眼睛,感觉到温暖的阳光照在脸上。
Let's walk over to the sun on the other side of the street.我们到街对面有阳光的地方吧。
There are many suns that are brighter than our sun.有许多恒星比我们的太阳更明亮。

in the sun, under the sun
两者意思不同:in the sun的意思是“在阳光下”; 而under the sun的意思是“在世界上”“到底,究竟”。

太阳从东方升起。
［误］  A sun rises in the east.
［正］  The sun rises in the east.
［析］  像sun这样世界上独一无二的自然物前须用定冠词the。只有在sun前有形容词修饰时才可加不定冠词a,起描绘作用。