1
go up/down the staircase
用 up 或 down 表示方向。
She went up the staircase to her bedroom.
她走上楼梯回到卧室。
楼梯，梯子
先理解核心含义，再看它在真实句子里的用法。
楼梯，梯子
a set of stairs, usually inside a building, including the supporting structure, handrails, and balustrades
She went up the staircase to her bedroom.
她走上楼梯回到卧室。
一段楼梯；楼梯间
A flight of stairs; a stairway.
由一组台阶组成的上下通道
a way of access (upward and downward) consisting of a set of steps
连接的楼梯组；楼梯井
A connected set of flights of stairs; a stairwell.
一组水闸(封闭的水道部分),一个接一个地安装在上面。
A set of locks (enclosed sections of waterway) mounted one above the next.
The old house had a grand staircase leading to the second floor.
那栋老房子有一个通向二楼的大楼梯。
She tripped on the staircase and sprained her ankle.
她在楼梯上绊倒了，扭伤了脚踝。
They installed a wooden staircase in the new building.
他们在新楼里安装了一座木制楼梯。
用 up 或 down 表示方向。
She went up the staircase to her bedroom.
她走上楼梯回到卧室。
常用形容词如 grand, narrow, steep, marble 等。
The old mansion had a grand spiral staircase.
那座古老的大宅里有一个宏伟的螺旋楼梯。
注意：更常见的说法是 a flight of stairs。
He climbed a long flight of staircase to reach the top floor.
他爬了很长的一段楼梯才到达顶楼。
Not this
There are three staircase in the building.
Use this
There are three staircases in the building.
staircase是可数名词，复数形式为staircases。中文学习者可能忽略复数变化，需根据数量使用相应的复数形式。
Not this
He fell down staircase and hurt his leg.
Use this
He fell down the staircase and hurt his leg.
staircase作为可数名词，在句子中通常需要冠词或限定词。中文没有冠词，学习者容易遗漏，需根据语境加上定冠词或不定冠词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
大理石楼梯
The grand entrance features a magnificent marble staircase.
宏伟的入口处有一个壮丽的大理石楼梯。
螺旋楼梯
A spiral staircase connects the ground floor to the attic.
一段螺旋楼梯连接一楼和阁楼。
木制楼梯
The old house had a creaky wooden staircase.
老房子里有一座吱吱作响的木制楼梯。
狭窄的楼梯
Be careful going up the narrow staircase.
上狭窄的楼梯时要小心。
陡峭的楼梯
The steep staircase was difficult to climb with heavy luggage.
这段陡峭的楼梯带着沉重的行李很难爬。
事后才想到的妙语
He was known for his staircase wit, always coming up with the perfect retort hours later.
他以事后才想到的妙语著称，总是几小时后才想出完美的反驳。
成功的阶梯
Each course completed is a step on the staircase of success.
每完成一门课程都是通往成功阶梯上的一步。
通往虚无的楼梯
The abandoned project felt like a staircase to nowhere, full of effort but leading to nothing.
那个被放弃的项目感觉像通往虚无的楼梯，充满了努力却一无所获。
这是一个移动的楼梯！
Hermione says this to Harry and Ron when they first encounter the moving staircases at Hogwarts in 'Harry Potter and the Sorcerer's Stone'.
在《哈利·波特与魔法石》中，赫敏第一次遇到霍格沃茨的移动楼梯时对哈利和罗恩说的。
这是大楼梯。
Rose says this to Jack when showing him the Grand Staircase on the Titanic in the film 'Titanic'.
在电影《泰坦尼克号》中，罗斯向杰克展示泰坦尼克号上的大楼梯时说的。
发长 /eɪ/ 音 (如 rain, wait)
Use staircase naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆分为 stair（楼梯）和 case（盒子），想象一个装有阶梯的盒子，每级台阶就是楼梯的一部分。
语域：neutral 常见场景：住宅楼梯、公共建筑楼梯、消防通道楼梯 该词通常用于描述建筑物内部的楼梯结构，在日常家居和公共建筑中都比较常见，属于中性偏正式用词。
The ending '-case' in 'staircase' is pronounced /keɪs/. Words like 'case', 'bookcase', 'showcase' share this sound, though stress may differ. The beginning 'stair-' is pronounced /stɛr/, as in 'stair', 'stairway', 'stairwell'. Note that 'stair' is a homophone of 'stare'.
Dictionary facts from ECDICT, WIKTIONARY.