1
the trunk of [something]
常用于描述树的树干。
The trunk of this oak tree is very thick.
这棵橡树的树干非常粗。
树干
先理解核心含义，再看它在真实句子里的用法。
树干
the main stem of a tree, usually covered with bark
The trunk of this oak tree is very thick.
这棵橡树的树干非常粗。
身体的一部分。
Part of a body.
树的主干,通常被树皮覆盖；树干通常是商业上有用的木材部分
the main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber
容器。
A container.
旅行或储存用的大型坚固行李箱
luggage consisting of a large strong case used when traveling or for storage
The old oak tree has a thick trunk that takes two people to wrap their arms around.
那棵老橡树的树干很粗，需要两个人才能合抱。
We carved our initials into the trunk of the maple tree in the backyard.
我们把名字首字母刻在了后院枫树的树干上。
Some birds build their nests in the hollow trunk of a dead tree.
有些鸟在枯树的空心树干里筑巢。
常用于描述树的树干。
The trunk of this oak tree is very thick.
这棵橡树的树干非常粗。
指象鼻时常用所有格。
The elephant lifted its trunk.
大象抬起了它的鼻子。
trunk作'大箱子'讲，常用于存放物品。
She packed her winter clothes in a trunk.
她把冬衣打包放进一个大箱子里。
Not this
There are many trunk in the forest.
Use this
There are many trunks in the forest.
树干是可数名词，表示多个树干时需用复数 trunks，中文无复数形式，易遗漏 -s。
Not this
The elephant's nose is very long.
Use this
The elephant's trunk is very long.
大象的鼻子英语专用 trunk，nose 指人鼻子或普通动物的鼻子，两者不可混用。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
树干
The boy carved his initials into the tree trunk.
男孩将他的姓名首字母刻在树干上。
象鼻
The elephant used its trunk to spray water.
大象用它的鼻子喷水。
汽车后备箱
I put the groceries in the car trunk.
我把杂货放进汽车后备箱。
整理大行李箱
She packed a trunk for her trip to Europe.
她为欧洲之旅整理了一个大行李箱。
长途电话
I made a trunk call to my parents abroad.
我给国外的父母打了一个长途电话。
主干道
The trunk road connects the two major cities.
这条主干道连接两个主要城市。
收拾行装（准备离开）
She packed her trunk and left for college.
她收拾好行装，出发去上大学。
Use trunk naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
树干、象鼻、后备箱——都是‘主干’。
Neutral register; typical settings: tree parts, elephant anatomy, car compartments, large containers.
可数名词，指树干、行李箱或躯干。
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WIKTIONARY.