【英语时差8,16】人工养殖三文鱼可能含有更多化学成分

The study tested uncooked salmon¹ with the skin left on. Health officials say most pollutants² are in the skin and the fat just below. They say removing the skin and cooking away fat removes many of the pollutants. The study says the chemicals apparently³ entered the farm-raised salmon through the fish products they were fed. Salmon in the wild eat small fish and sea organisms⁴ that contain fewer P-C-B's and other chemicals. The salmon industry notes that meat and milk products can also contain P-C-B's. But it says salmon farmers are reducing the levels in their food by using, for example, soybean oil in place of fish oil. P-C-B's were used to make products like plastics and paint. The United States banned this group of chemicals in the nineteen-seventies. But they remain in the environment. Another chemical, dioxin, is released⁵ when plastics and some other materials are burned. Dioxin has been linked to reproductive and developmental problems in addition to cancer. People do not always know if the salmon they eat was farmed or wild or where it came from. The study calls for stores and eating places to provide more information.

1 salmon   

n.鲑，大马哈鱼，橙红色的

参考例句：

• We saw a salmon jumping in the waterfall there.我们看见一条大马哈鱼在那边瀑布中跳跃。
• Do you have any fresh salmon in at the moment?现在有新鲜大马哈鱼卖吗？

2 pollutants   

污染物质（尤指工业废物）( pollutant的名词复数 )

参考例句：

• Pollutants are constantly being released into the atmosphere. 污染物质正在不断地被排放到大气中去。
• The 1987 Amendments limit 301(g) discharges to a few well-studied nonconventional pollutants. 1987年的修正案把第301条（g）的普通排放限制施加在一些认真研究过的几种非常规污染物上。 来自英汉非文学 - 环境法 - 环境法

3 apparently   

adv.显然地；表面上，似乎

参考例句：

• An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
• He was apparently much surprised at the news.他对那个消息显然感到十分惊异。

4 organisms   

n.有机物( organism的名词复数 )；有机体；生物；有机体系

参考例句：

• The organisms can be divided into discrete categories. 有机体可分为许多互不相联的种类。
• The cell is the unit of which all living organisms are composed. 细胞是构成一切生物的单位。

5 released   

v.释放( release的过去式和过去分词 )；放开；发布；发行

参考例句：

• He was released on bail pending committal proceedings. 他交保获释正在候审。
• With hindsight it is easy to say they should not have released him. 事后才说他们本不应该释放他，这倒容易。