cob|cobs

那只雄天鹅正在湖边守护它的巢。

The ___cob is guarding its nest by the lake.

老房子的墙壁是用土坯砖砌成的。

The old house's walls were built with ___cobs.

他切了几片刚出炉的圆面包当早餐。

He sliced the freshly baked ___cob for breakfast.