1. pig it : 像猪一样生活, 过困苦的生活；
2. buy a pig in a poke : 瞎买东西；
3. teach a pig to play on a flute : 做不可能做到的事；
名词
1. 猪
A pig is a pink or black animal with short legs and not much hair on its skin. Pigs are often kept on farms for their meat, which is called pork, ham, bacon, or gammon.
2. see also: guinea pig
3. 猪猡；讨嫌的人；（尤指）贪婪的人，苛刻的人
If you call someone a pig, you think that they are unpleasant in some way, especially that they are greedy or unkind.
4. 难干的活；难做的事
If you say that something is, for example, a pig of a job, you mean it is very difficult.
5. 使贪婪地吃；使拼命大吃
If you say that people are pigging themselves, you are criticizing them for eating a very large amount at one meal.
6. 粗制滥造；把…弄糟
If you make a pig's ear of something you are doing, you do it very badly.
7. 不可能的事；异想天开
If you say 'pigs might fly' after someone has said that something might happen, you are emphasizing that you think it is very unlikely.
8. 大吃特吃；吃得过量
If you say that someone is making a pig of themselves, you are criticizing them for eating a very large amount at one meal.
相关词组：pig out
1. domestic swine
Synonym: hoggruntersquealerSus scrofa
2. a crude block of metal (lead or iron) poured from a smelting furnace
3. mold consisting of a bed of sand in which pig iron is cast
Synonym: pig bed
4. uncomplimentary terms for a policeman
5. a person regarded as greedy and pig-like
Synonym: hog
6. a coarse obnoxious person
Synonym: slobslovenslovenly person