a going concern的用法和样例：
- He sold the cafe as a going concern.
- Arthur has greatly increased the turnover of his shop and he's decided to sell it as a going concern.
- It was two years before the business was a going concern.
- For shareholders: To keep a going concern and to make an adequate profit.
- Our boat stays afloat because at each alternation we keep the bulk of it intact as a going concern.