两者都难以持续产生利润。

Both are very hard to make consistent profit.

youdao

成本是价值创造的源泉，也是产生利润的驱动力。

Cost is the source of value creation and the driving force of earning profit.

youdao

商业性的、能够产生利润的MUD的黎明已经不远了。

The dawn of commercial profit-making MUDs in not far away.

youdao

商业性的、能够产生利润的MUD的黎明已经不远了。

The dawn of commercial profit-making MUDs in not far away.

youdao