They were so old, they should have been put out to pasture years ago.他们如此年迈，多年前就该叫他们退休了。I'm not ready to be put out to pasture yet.我还没有做好因年纪大而被辞退的准备。The stallions are put out to pasture every spring.种马每年春天都放到牧场去吃草。I'm not ready to be put out to pasture just yet!我还不打算告老还乡呢！