I have always know that you are not to take care of themselves , whenever i walk away , you jump out from the pigsty 我向来都知道你就是不会照顾自己，每当我一走开，你就从猪栏跳出去。
4.
In this sense i have never looked upon ease and happiness as ends in themselves - this ethical basis i call the ideal of a pigsty 就在这个意义上，我从来不把安逸和享乐看作生活目的本身我把这种伦理基础叫做猪栏的理想。
5.
The study , conducted for 2 . 5 years at a research farm in south west iowa , compared sows housed in stalls to those housed in naturally ventilated hoop barns with straw bedding 这项研究是在爱荷华州西南的一个农场进行的，历时2 . 5年，对照组放养在单独猪栏里，试验组大群放养，垫料为稻草。
6.
A study by researchers at iowa state university found that placing pregnant sows in group housing structures ( hoop barns ) could be more cost - effective and just as productive as placing them in sow stalls 爱荷华州大学研究发现，把妊娠母猪大群饲养（铁环圈起来的猪舍里）可以更有效利用猪舍，生产性能与把每只母猪单独放在猪栏里没有区别。
