And the fact that his warnings went unheeded clearly pains him.

他的警告未被重视，这显然使他很痛苦。

It tried unsuccessfully to warn the government that the new law presented a potentially massive issue, but its calls went unheeded.

他们试图警告俄罗斯政府新法会产生潜在的巨大问题，但这些要求都被俄方忽略。