动词 cross-file:

1. have one's name listed as a candidate for several parties

crossv.穿过；交叉；杂交；反对；勾掉；碰见；阻挠n.十字架；十字形；杂交动植物；苦难adj.交叉的；相反的；生气的；杂交的crossfeedn.交叉馈电

1. He spent hours filing the iron rod in two.
   他花了几个小时把那条铁棒锉成两截。
2. They are filing the teeth of a saw.
   他们正在用锉子锉锯齿。