挪威在北海拥有丰富的天然气田。

Norway has rich gas ___fields in the North Sea.

火山的上部是一片广阔的黑色熔岩地。

The upper part of the volcano is a vast ___field of black lava.

他们在南极洲的冰冻冰原上寻找陨石。

They searched for meteorites on the frozen ice ___fields of Antarctica.