Although a formal environmental impact assessment has not yet been done, it should not be assumed that thiomersal-free presentations of vaccines will yield a positive net effect on the environment.
虽然尚未开展正式的环境影响评估，但不应假设无硫柳汞的疫苗对环境产生的净效果是正面的。
Some profit indexes like income of each section, net asset yield and net profit have acted as the scaled standard of listed company for a long time.
长期以来，以每股收益、净资产收益率和净利润为代表的利润指标一直作为上市公司价值的衡量标准被广泛采用。
Dynamic efficient sustained yield — the sustained yield that produces the highest present value of net benefit.
动态能效持续产能——净效益生产为最高当前价值的持续产出。
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