对下面的句子进行句法分析和翻译。重点分析based on the leves found so far的结构和意思。

Question

although based on the levels found so far, you would need to eat 16 kilograms of the tainted fish meat in a year to get sick.
完整的句子是。Japan reported finding radioactive fish that exceeds regulatory limits, although based on the levels found so far, you would need to eat 16 kilograms of the tainted fish meat in a year to get sick.

Answer 1

虽然基于目前发现的(污染)水平，一个人需要在一年内吃掉16公斤被污染的鱼才会患病。
或者译为：不过，基于目前发现的(污染)水平，一个人需要在一年内吃掉16公斤被污染的鱼才会患病。
based on the levels found so far是过去分词短语作方式状语，表示看问题或进行判断的角度或依据。
其中，found so far是过去分词短语修饰levels。 里面的so far则是时间状语修饰动词found.