Marco mentions Professor van der Linden, a psychologist who has taken a long, hard look at the issue of climate denial.

马尔科提到了心理学家范·德·林登教授，他对否认气候变化这个问题进行了长期且认真的研究。

If you take a long, hard look at something, you examine it very carefully in order to improve it for the future.

如果你对某件事情进行了长期且认真的研究那就是为了将来改进它而非常仔细地检查它。

You should take a long hard look at the issues before committing yourself.

【hard，hardness】你在表态之前要看清楚这些问题。

The idiom to take a long, hard look at something means to examine something very carefully in order to improve it for the future.

习语“仔细冷静地考虑”是指非常仔细地检查某事，以便将来改进。

Mr. Spence slowly moistened his lips with his tongue, and removing his pince-nez, took a long hard look at Millner.

斯宾塞先生慢慢地用舌头舔舐嘴唇，摘下夹鼻眼镜，狠狠地看了米尔纳一眼。