Question

up and down是什么意思

Answer 1

Up and down 就是起伏、上下的意思。
像这一类的词组有很多，例如：
1.day and night 日日夜夜
例句:
I wish he'd desist from entertaining hisfriends at all hours of the day and night.
但愿他别再昼夜不分地招待他的朋友.
2.then and there 当场,立即
例句:
I decided to do it then and there.
我决定当场立即就做.
3.now and then 时而,不时
例句:
I like to go to the opera now and then.
我喜欢偶尔去看歌剧.
4.forever and a day 极长久地,永久地
例句：
They promised to remain friends forever anda day.
他们许诺要永远保持友谊.
5.once and for all 彻底地,一劳永逸地
例句：
It is a revolution that will bury thecapitalist system and all other systems of exploitation once and for all.
这是要把资本主义制度和一切剥削制度彻底埋葬的一场革命.
6.by and by [,bai əb 'bai] 不久,后来,以后
例句:
It's very likely to clear up by and by.
很可能不久要放晴了.
7.by and large 总的来说,大体上,基本上
例句:
By and large， our work have beensuccessful.
总的说我们的工作是成功的.
8.come and go 来来去去; 变化不断
例句:
Fashions come and go but the long dress isalways popular.
时装不断变化,但长的服装却永远受到青睐.
9.right and left 向左右两边(到处)
例句:
In word processing,to print a document witheven right and left margins.
字(词)处理技术中,使打印文件有平齐的左右空白边.

Answer 2

up and down
上下
双语对照

词典结果：
up and down
[英][ʌp ænd daun][美][ʌp ənd daʊn]
上上下下; 起落;

以上结果来自金山词霸

例句:

1.
Our emotional lives move up and down constantly.
我们的情感生活总会上下变化。

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Answer 3

上上下下或者来来回回
EX1:He watched me up and down.他上上下下地看我
EX2:He is walking up and down.他来来回回地走。

Answer 4

上上下下; 起落

Answer 5

是上上下下或来来回回