The sea was rough when we came across.

当我们渡海时风浪很大。

Can you jump across?

你能跳得过去吗？

The stream is 6 feet across.

这条河有六尺宽。

The church is just across from the school.

教堂就在学校的对面。

He could not get the idea across to the class.

他无法让班上的学生懂这概念。

He swam across English Channel.

他游过英吉利海峡。

a bridge across the river

横跨此河之桥。

She lives across the street.

她住在对街。

I came across an old friend yesterday morning.

我昨天早上偶然遇到一个老朋友。