It's easy to pick holes in a piece of work so long after its publication.在一部已出版很久的作品中找漏洞是很容易的。It feels good to have finished a piece of work.完成一项工作后感觉很好。She came to the class with a piece of work she should have given in last week.她带着本该上周就交的作业来上课。She's a piece of work, isn't she?她真是个怪人，难道不是吗？