Some experts say the findings raise questions because the IQ losses were similar in the two groups despite the eightfold difference in their average level of exposure.

一些专家对这项发现提出问题因为尽管暴露的环境中多环芳烃含量有八倍的不同但是智商值的减少却相似。

youdao

Current normal background exposure is not expected to affect human health on average.

目前，正常环境的接触总体上不会影响人类健康。

youdao

It makes no sense to compare average IQ scores of different populations because they are unlikely to have identical exposure to all of these factors.

比较不同种族的平均IQ水平是毫无意义的，因为他们不可能每个影响因素都相同。

youdao

The average exposure to organophosphates is lower today than it was when these studies began a decade ago.

CNN: Pesticide exposure in womb may hurt your child's IQ

It is also possible to bend the risk curve using other ETFs such as QQQ for Nasdaq exposure, DIA for Dow Jones Industrial Average exposure, EEM for emerging markets exposure, or even non-equity ETFs such as GLD for gold exposure.

FORBES: Rethinking Long-Only Equity

In Japan, the average equity exposure is far lower, where bonds account for 48.8% of funds.

FORBES: Investors Moving Into Rainy Day Cash After Sunny Quarters