r. to the opposite side
r. transversely
prep. 越过, 穿过, 与...相交叉, 在...的对面
adv. 交叉, 到另一边, 在对面, 成十字
1. The children ran across the field to play.
孩子们跑过田野去玩。
2. There is a bridge across the river.
河上有一座桥。
3. She walked across the street carefully.
她小心翼翼地走过街道。