研究集中跟踪5种化合物水平上升带来的影响。
The research effort has focused on tracing the effects of growing levels of five compounds.
专家说需要对每种污染物进行测试,以查明对人类的长期影响。
Experts say testing needs to be done on each contaminant to determine the long-term effects on humans.
目前还没有关于怀孕时低碳水化合物饮食影响的研究,因此如果它对胎儿有什么影响也是不知道的。
There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, is unknown.
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