Unfortunately writers take a very small part of the profit on their books, and I think in the e-book world there is a real danger they will take even less, unless they are vigilant and robust about protecting their own interests.
不幸的是，作家从他们的书中获取的利润非常少，而且我认为，在电子书世界中，真正的危险是他们会拿走更少的利润，除非他们对保护自己的利益保持警惕和坚定的态度。
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Robust
Unfortunately