They're concerned, and you can tell they have very guarded conclusions in these papers, because they're talking about big laboratories that are funded by lots of money and by scared people.
他们非常小心， 你可以看出他们在论文中作结论的时候是很谨慎的， 因为他们自己，是这些国家级的大实验室， 从那些怕地球变暖的人那里 得到大量研究经费的实验室。