rack
noun uk/ræk/ us/ræk/
(FRAME)
[ C ]架子;搁物架
a frame or shelf, often formed of bars, that is used to hold things
a vegetable rack 摆放蔬菜的货架
a plate rack 盘碟架
a luggage rack 行李架
[ C ] US (UK frame)（用于台球或斯诺克比赛开球时放置球的）三角框
a wooden or plastic triangle used to arrange the balls at the start of a game of billiards, pool, snooker, etc.
the rack （旧时为逼供而使用的）拉肢刑具
in the past, a device to which people were tied that stretched their bodies by pulling their arms in one direction and their legs in the other direction, usually used as a way of forcing them to give information
(MEAT)
[ C or U ]（羊或猪）颈肉
a large piece of meat cut from the neck of a sheep or pig
The butcher prepared a rack of pork. 那个屠夫准备了一块猪颈肉。
We're having rack of lamb for dinner. 我们晚餐吃羊颈肉。
(MACHINE)
[ C ]齿条；齿轨；齿棒
a bar with tooth-like parts along one edge that fits into a pinion (= a wheel with tooth-like parts) allowing change between circular and straight-line movement
(DECAY)
rack and ruin (US also wrack and ruin) 糟糕透顶（的状态）;破损，损坏
a state of decay
go to rack and ruin The whole farm was going to rack and ruin. 整个农场逐渐变得破败不堪。
Over the years, they let the house go to rack and ruin.
Many of the former mill towns are trying to avoid wrack and ruin by increasing tourism.
The city had been abandoned, and the grand buildings in the square were in rack and ruin.
Why would anyone allow such a place to fall into wrack and ruin?
Idiom
be on the rackidiom 痛苦不堪;焦虑万分
to be suffering great physical or mental pain
rack
verb [ T often passive ] uk/ræk/ us/ræk/
使肉体（或精神上）受巨大痛苦;折磨
to cause physical or mental pain, or trouble, to someone or something
Even at the end, when cancer racked his body, he was calm and cheerful. 即使在最后，当他的身体备受癌症病魔摧残的时候，他仍然镇定自若、乐观开朗。
The dog was already racked by/with the pains of old age. 那条狗已经又老又病，痛苦不堪。
He was racked by/with doubts/guilt. 他被疑虑／内疚所折磨。
Idiom
rack your brainsidiom UK (US rack your brain) 绞尽脑汁，搜肠刮肚
to think very hard
I've been racking my brains all day but I can't remember her name. 我搜肠刮肚想了一整天，却怎么也记不起她的名字来。
Phrasal verbs
rack off 滚，滚开
to leave or go away, used especially as a rude way of telling someone to go away
If you don't like Sydney, rack off. All you are doing is whinging. 你要是不喜欢悉尼就滚蛋，你只会在这里抱怨。
rack something up 累计（得分或获利）；累积；聚集
to gradually get more points, profits, etc.
He has racked up 450 points in three months. 3个月内，他已经累积了450分。
Astronomical profits/losses were racked up by airlines last year. 去年各航空公司累计盈利／亏损达到了天文数字。
Synonym: accumulate
（尤指过分地）增加，提高（房租、价格等）
to increase something such as a rent or price, especially by an amount that is considered to be too much
Our landlord racked up the rent by 15 percent this year. 我们的房东今年把房租猛涨了15%。