We actually found there wasn't any multi-year ice at all.

事实上，我们发现这里根本没有任何冻结多年的冰层。

youdao

We'd been led to believe that we would encounter a good proportion of this older, thicker, technically multi-year ice that's been around for a few years and just gets thicker and thicker.

我们被引导着去相信我们能找到很大一部分经过多年冻结形成的更古老、更厚的冰层，这些冰已经存在很多年了，而且会越来越厚。

youdao

I'm told he will also say that they did not encounter any multi-year ice (only new ice that froze that year).

据我所知，他还会透露这次考察中没有发现任何多年冻结的冰层(那里只有当年冻结的新冰层)。

youdao

The latest findings show that virtually all the ice surveyed is what is called first-year ice, ice that only grew this past winter, as opposed to tougher multi-year ice which survives the warmth of summer.

BBC: Arctic team gives up on ice radar