The United States was second, followed by South Korea, the Nihon Keizai Shimbun said.

据《日本经济新闻》报道，美国和韩国分别位居第二位和第三位。

The United States was second , followed by South Korea, the Nihon Keizai Shimbun said.

据《日本经济新闻》报道,美国和韩国分别位居第二位和第三位.

A Japanese study by Nihon University in Chiba showed that polystyrene began to break down within a year, producing detectable levels of pollutants.

位于日本千叶县日本大学的一份研究报告证实，聚苯乙烯会在一年内进行分解，并产生未被检测出的污染物。

The team found that the various smaller styrene units were present in the same relative quantities Katsuhiko Saido of Nihon University in Chiba, Japan in both the lab and in the water samples.

这个团队发现：各种较小聚乙烯单元被分解为相同对应数量的颗粒（在卡素西口赛一朵的实验室条件下和海水样本条件下）。