At first, this was a highly successful — and highly profitable — enterprise.

一开始，这是一项非常成功（也非常赚钱）的生意。

In principle, it seemed like it could be a profitable enterprise.

从原则上讲， 这似乎是一个有利可图的企业。

Establishing a profitable enterprise to replenish the family's finances was not straightforward in any shape or form.

建立一个盈利的企业来补充家庭的财务在任何形式上都不是一件容易的事。

For DAC to be a profitable enterprise, though, the tax would probably need to be a fair bit higher, which could smother economies still dependent on hydrocarbons.

要让 DAC 成为一家盈利企业， 不过，税收可能需要高一点，这可能会扼杀仍然依赖碳氢化合物的经济体。