1
stack sth (up)
up 可省略，但加 up 强调堆叠过程。
He stacked the books up on the shelf.
他把书堆叠在架子上。
把…堆起来；堆放
先理解核心含义，再看它在真实句子里的用法。
把…堆起来；堆放
to arrange things in a pile or piles
He stacked the books up on the shelf.
他把书堆叠在架子上。
用堆叠装载或覆盖
load or cover with stacks
排列成堆
arrange in stacks
安排顺序以增加获胜机会
arrange the order of so as to increase one's winning chances
stack
Base
原形
stacks
3rd person
第三人称单数
stacking
-ing
现在分词
stacked
Past
过去式
stacked
Past participle
过去分词
She stacks the books on the shelf.
她把书堆在架子上。
He stacked the chairs after the party.
聚会后他把椅子堆叠起来。
They have stacked all the boxes in the corner.
他们已经把所有箱子堆在了角落里。
规则动词，过去式和过去分词加-ed。
He stacked the plates in the cupboard.
他把盘子叠好放在橱柜里。
I spent the afternoon stacking firewood near the shed.
我花了一下午把木柴堆在小屋旁。
Stack the files here so we can find them easily.
把文件堆在这里，这样我们容易找到。
up 可省略，但加 up 强调堆叠过程。
He stacked the books up on the shelf.
他把书堆叠在架子上。
表示用某物堆满某个容器或表面。
She stacked the tray with dishes.
她在托盘上堆满了盘子。
不及物用法，主语为被堆叠的物品。
The boxes stacked neatly in the corner.
盒子整齐地堆叠在角落里。
Not this
He stacked on the table.
Use this
He stacked the books on the table.
英语中"stack"是及物动词，必须直接跟被堆叠的对象，不能像中文那样省略宾语或通过介词引入。改正后添加了宾语"the books"，并保持了介词短语"on the table"。
Not this
He piled the plates in a neat tower.
Use this
He stacked the plates in a neat tower.
"pile"指随意堆放，而"stack"强调整齐有序的堆叠。这里描述的是整齐的塔状，应使用"stack"。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
往货架上堆放商品；上货
The shop assistants were stacking the shelves before the doors opened.
商店店员在开门前往货架上堆放商品。
把箱子堆叠起来
Please stack the boxes carefully so they do not fall over.
请小心地把箱子堆叠起来，免得倒下来。
把椅子叠放起来
After the concert, volunteers stacked the chairs by the wall.
音乐会结束后，志愿者们把椅子叠放在墙边。
堆放木柴
He spent the afternoon stacking firewood in the shed.
他花了一下午的时间把木柴堆放在棚屋里。
（为增加胜算而）事先安排牌；做手脚
Some players stack the deck, which is cheating.
有些玩家事先摆好牌，这是作弊。
（不公平地）事先安排，使结果偏袒某人
The game was stacked against the visiting team from the start.
这场比赛从一开始就对客队不公平。
（与…）相比；不相上下
How does this new model stack up against the old one?
这款新机型与旧款相比怎么样？
使局势变得对某人有利（或不利）；增加胜算
By investing early, they stacked the odds in their favor.
通过及早投资，他们增大了胜算。
Use stack naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：把纸牌一张张叠成高塔，stack 发音像‘斯代克’，记住动词就是‘把…堆叠起来’；洗牌做手脚也是把顺序‘堆’成对自己有利。
语域：mixed 常见场景：everyday arranging of books or boxes、informal contexts about card games or contests “stack”表示“堆放”时属于中性常用词，日常和一般书面语都可以用；表示“为增加胜算而安排（牌等）”时多用于口语或固定搭配（如 stack the deck），正式写作中较少见。
及物动词时后接宾语，常用于被动语态；不及物动词时常与 up 连用表示堆叠起来。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WORDNET.