猪靠吃谷物长肥.The pigs fattened on corn.猪什么都吃,却为别人长肥.The pig would eat anything but it gets fat for others.那些羊自从我上次见到以来又长肥了.Those sheep have fattened out since I last saw them....

“长肥”的英语可以翻译为：fatten，flesh up ...