averages index

Another indicator, the Living Planet Index, averages changes in the sizes of populations of 1, 686 vertebrate species.

另一个指标，地球生命指数，是1 686种脊椎动物的种群数量变化的平均数。

The three major market averages, the Dow Jones industrial average, the Standard & Poor's 500 and the Nasdaq composite index, ended the day up 1.5 percent or more.

美国三大股指，道琼斯工业平均指数、标准普尔 500指数、纳斯达克综合指数收盘涨幅均达到或超过1.5%。

And if you buy index funds, you don't have to worry about badly lagging behind the market averages because you or your fund managers pick the wrong stocks.

而如果买进指数基金，就不用担心因为你自己或你的基金经理选错了股票而使你的投资收益远远落后于市场平均水平。