n.穿孔者；钻孔器；船蛆；凿船虫
This poison helps the plants resist insect, especially the maize borer. 毒素可以帮助农作物抵抗害虫，尤其是玉米钻孔虫。
Digging is done by forcing the borer into the ground and twisting the handle. 把钻孔器用力插进地里，转动把手，就可以实现挖掘。
n.劳动者；劳工
=labourer（英）.
劳动者
