Prof David Phillips of King's College London, a member of the working group, said there was no particular threshold at which pollution becomes dangerous.

  • 伦敦国王学院的戴维•菲利普斯教授是工作组的成员之一。他说没有特定的临界值可以判定污染到达什么水平才算危险。

  • 互联网摘选 2025-01-19 22:44:47

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