across表示:
穿过,跨过(从一边到另一边):
I walked across the park. 我穿过公园。
over有时也可用于类似意义:
See if you can jump over (across) the stream. 看你能否跳过那条小溪。
在(河、街等的)另一边:
The woods are across the river. 树林在河那边。
over也可用于类似意思:
His village is just over (across) the border. 他的村子就在边界那边。
在表示“穿越(过)”时常可用through:
We walked through the woods. 我们穿过树林。
若是平面,也可用across:
We walked across the ice. 我们从冰上走了过去。