The problem is that much of that refreezing creates a relatively thin layer of so-called first-year ice.

问题是，重新冻结的冰很大程度上相对较薄，所以被称为“首年冰”。

youdao

The problem is that much of that refreezing creates a relatively thin layer of so-called first-year ice.

问题是，重新冻结的冰很大程度上相对较薄，所以被称为“首年冰”。

youdao