It can be in the form of a single person in a small sole-trader like business, or in the complex structure of a multinational corporation.

它可以是以个人为单位的独家商业经营商，或是有着复杂结构的跨国公司。

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In Britain, if it's just you, the easiest is to be a sole trader.

在英国，如果你只是一个人，最简单的就是自己当老板。

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If the trader was a sole trader or partnership, you can continue to pursue any claim you may have against the trader, via the small claims court if necessary.

BBC: When stores go bust: How to get your money or goods back

After a decade in the market as a sole trader, in 1894, Michael Marks formed a partnership with Yorkshireman Tom Spencer, a former cashier with a retail firm.

BBC: M&S 'rooted in Leeds market tradition'