Or do you move all the validation code into the services tier, removing it from the domain class that should be the owner of that knowledge?

或者您可以将所有验证代码移入到服务层，然后从应当是该知识所有者的域类中删除它吗？

youdao

Business and financial Knowledge (7) - Does the product owner understand the economics and financial dynamics of his product?

商业和财务知识(7)-产品经理知道他的产品的经济和财务动力学吗？

youdao

The owner of the home was an executive of 3m, which is where this tape was developed and to our knowledge is the first application for a residential home.

该项目业主是3m公司的主管，这种胶带就是3 M公司研发的，据我们所知这是在住宅中的首次应用。

youdao

It also requires the specialized product knowledge that only you have, as the business owner or expert.

FORBES: How Private Aviation Can Stop Wasting Millions On Advertising

"I strongly appeal to anyone who may have bought, been offered, or has knowledge of the whereabouts of these stolen items so we can reunite them with the owner, " said Mr Machin.

BBC: Steiff teddy bears stolen in Faversham burglary

The challenge I face as a small business owner, therefore, is how can I give my staff access to knowledge and new ideas without breaking the bank by, say, sending them all over the world to attend conferences and the like?

FORBES: The Small Business Payoff Of 'Thinking Day'