Big firms' net margins have actually been rising.

大公司的净利润率实际上一直在上升。

Optimists, who see annual revenues of $8bn and net profit margins of around 30%, might counter that it is cheap.

乐观者在看到高达80亿美元年营收和约30%的净利润率后，可能会反驳道，这也太便宜了。

Profits have grown faster still: the firm's operating margin now exceeds 50%; net margin has averaged 36% over the past decade, 13 percentage points higher than that of famously profitable Apple.

利润增长更快：公司的营业利润率现已超过 50%；净利润率在过去十年平均为 36%， 比以盈利着称的苹果公司高出 13 个百分点。