他用金属杆支撑帐篷的一角。

He used a metal ___rod to support the corner of the tent.

爷爷用鱼竿在湖边钓了一下午鱼。

Grandpa fished by the lake all afternoon with his ___rod.

这块地的面积大约是两杆。

The field measures about two ___rods in area.