跨[kuà] 基本解释：
新英汉大词典：
- 跨[kuà]
- 动词- （抬起一只脚向前或向左右迈） step; stride:
stride over a ditch [brook];跨过小沟 [溪]
step into a doorway;跨进大门
- （两腿分在物体的两边坐着或立着） bestride; straddle:a gigantic bridge pning the Changjiang River;横跨长江的大桥
mount [bestride] a war-horse;跨上战马
- （超越一定数量、时间或地区之间的界限） cut across; go beyond:organize transregional commodity supplies;组织跨地区的商品供应
Asia extends across the frigid, temperate and tropical zones.亚洲地跨寒、温、热三带。
以上内容来源于：《新汉英大辞典》
例句与用法：
So as to straddle or bridge; astride.
Tall trees arched across the river.
A step made in walking; a stride.
A fixture similar in design to a toilet that is straddled for bathing the genitals and the posterior parts.
Ladies ride horses by sitting astride or side-saddle.
跨的其他解释: