农民们竖起了警示牌，防止侵占者进入他们的私人土地。

The farmers put up warning signs to keep ___encroachers off their private land.

村民们联合起来抵抗那些侵占他们祖传土地的入侵者。

The villagers united to resist the ___encroachers who were taking over their ancestral lands.