他用一根金属杆固定帐篷。

He used a metal ___rod to secure the tent.

在旧时代，老师常用藤条惩罚不听话的学生。

In the old days, teachers often punished disobedient students with a ___rod.

我的钓鱼竿断了，今天没法钓鱼了。

My fishing ___rod broke, so I can't go fishing today.

这块地的长度大约是两竿。

The length of this plot is about two ___rods.

劫匪从口袋里掏出一根棍子威胁店员。

The robber pulled out a ___rod from his pocket to threaten the clerk.