求翻译：One reason for this higher Cd exposure level in Japanese is suspected to be higher Cd levels in rice, which is a staple food for Japanese.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

One reason for this higher Cd exposure level in Japanese is suspected to be higher Cd levels in rice, which is a staple food for Japanese.

问题补充：

匿名	2013-05-23 12:26:38 这较高的 Cd 暴露水平，在日本的原因之一被怀疑为高 Cd 水平的水稻，是日本的主食。

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