across的意思是横切，横断，越过，横过；(走)过。
The cart creaked across the green .
大车咯吱咯吱地从青草地上走过去。
A wisp of hair straggled across her ear .
一束头发散落在她的耳朵上。
The others struggled across the river .
其他的人也都死挨活撑过了河。
Did you ever run across the word "camp" ?
你曾见过“camp”这个词吗？
He is not very good at getting his ideas across .
他不善于表达思想。
Tall trees arched across the river .
高大的树木成拱形横跨过那条河。
Your meaning did not really get across .
你的意思别人并未真正理解。
Roll deposits cut across sandstone bedding .
卷型矿床切穿砂岩的层理。
She is very good at putting her ideas across .
她非常善于表达思想。
A fresh breeze puffed across the river .
凉爽的微风一阵阵吹过河面。