阑干的英文：
fences; banisters; balustrades; railings

参考例句：

"The sand-sea deepens with fathomless ice, And darkness masses its endless clouds;"
瀚海阑干百丈冰,愁云黪淡万里凝。

fences是什么意思：
n. 围墙，栅栏；障碍物；销赃犯
v. 用篱笆围住；防护；搪塞，支吾

The horse stopped short at the fence.
马跑到篱笆处突然停了下来。

The horse refused the first fence.
这匹马不肯跳过第一道栅栏。

That fence is the limit of the school.
那堵围墙是学校的界限。

banisters是什么意思：
楼梯扶手; 楼梯栏杆

The boys amused themselves by sliding down the banister.
男孩们从楼梯扶手滑下以取乐。

Herb slid down the banisters and almost knocked Watkins over
赫伯从楼梯扶手上滑下去，差点儿把华系斯撞倒了。

A staircase is the part of the building including the stairs and banisters and sometimes the walls and ceilings surrounding them
staircase指建筑物内容纳楼梯及其栏杆的部分,有时包括周围的墙壁和天花板

balustrades是什么意思：
n. 栏杆

From the marble balustrades on either bank lanterns of crystal and glass of every description shed a silvery light, clear as snow.
两边石栏上，皆系水晶玻璃各色风灯，点的如银花雪浪。

Suddenly, he shook his head, stood on tiptoe, and leant his short, fat body over the balustrade
蓦地他晃着脑袋，蹑起了脚后跟，把他那矮胖的身体伏在月台的栏杆上，向着下边大声说道