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hold on to the banister
也可写作 hold onto；banister 是可数名词，复数 banisters 常指整排栏杆。
Please hold on to the banister when you go down the stairs.
下楼梯时请扶住楼梯扶手。
楼梯扶栏；栏杆
先理解核心含义，再看它在真实句子里的用法。
楼梯扶栏；栏杆
a railing beside a staircase or balcony to prevent people from falling
Please hold on to the banister when you go down the stairs.
下楼梯时请扶住楼梯扶手。
楼梯扶手,供人用手扶的栏杆。
The rail on the side of a staircase that a person's hand holds onto.
楼梯或阳台边防止坠落的栏杆
a railing at the side of a staircase or balcony to prevent people from falling
楼梯扶手的竖杆,栏杆柱。
One of the vertical supports of such a handrail.
She held the banister tightly as she walked down the stairs.
她下楼时紧紧抓住楼梯扶手。
The old banister wobbled when I leaned on it.
我靠在旧扶手上时，它摇晃了一下。
Please paint the banister before the guests arrive.
请在客人到达前给楼梯扶手刷漆。
也可写作 hold onto；banister 是可数名词，复数 banisters 常指整排栏杆。
Please hold on to the banister when you go down the stairs.
下楼梯时请扶住楼梯扶手。
banister 作主语时，动词用单数；例如 The banister is/was...
The old banister wobbled when I leaned on it.
我靠在旧楼梯扶手上时，它晃了一下。
slide down (the) banister 常指沿扶手滑下，多用于口语。
The children were sliding down the banister.
孩子们正从楼梯扶手上滑下来。
Not this
The children were sliding down by the banister.
Use this
The children were sliding down the banister.
英语中，slide down 是及物动词短语，直接接滑行的表面（如 the banister），表示“顺着栏杆滑下来”。受汉语“顺着”的影响误加 by，但 down by 表示“在……附近”，语义不对。应删去 by，写 down the banister。
Not this
She gripped on the banister to steady herself.
Use this
She gripped the banister to steady herself.
动词 grip 是及物动词，直接接被握住的物体，不需要介词 on。汉语“抓住栏杆”常让人误加介词，但英语中 grip on 是错误搭配，应删去 on。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
扶住楼梯扶手
Hold onto the banister when you climb the stairs.
爬楼梯时请扶住楼梯扶手。
顺着楼梯扶手滑下去
It's dangerous to slide down the banister.
顺着楼梯扶手滑下去很危险。
扶手栏杆
The banister rail was polished to a shine.
扶手栏杆被擦得锃亮。
栏杆立柱
The wooden banister post is carved with flowers.
这根木制栏杆立柱上刻着花。
损坏的楼梯扶手
The broken banister needs to be repaired.
损坏的楼梯扶手需要修理。
楼梯扶手
Please hold the stair banister.
请扶着楼梯扶手。
Use banister naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
banister 里有 ban（禁止）：楼梯的扶栏像一道禁令，拦住你防止摔下去。
语域：neutral 常见场景：居家装修、楼梯安全、日常对话 banister 是日常中性词，通常指楼梯或阳台旁的扶手/栏杆，口语和一般书面描述中都较常见；在更正式的建筑术语中，有时会用 railing 或 balustrade。
Canister rhymes exactly with banister: both have the stressed vowel /æ/ followed by /nɪstər/. The other words share the spelling ending -ister, but their stressed vowels differ, so they are lookalikes, not rhymes.
Dictionary facts from ECDICT, WIKTIONARY.