in
例子
The keys are in my backpack.
钥匙在我的背包里。
02
在, 于
used to show when something happens within a particular time frame
例子
I was born in September.
我出生在九月。
03
在, 里
used to indicate being in a particular situation, mood, or physical state
例子
The town is in ruins after the storm.
风暴过后，小镇处于废墟之中。
例子
They cried in joy at the surprise.
他们因惊喜而高兴得哭了。
05
在, 于
used to indicate a particular characteristic being measured, judged, or noticed
例子
He 's weak in math but excels in writing.
他在数学方面很弱，但在写作方面很出色。
06
在, 里
used to indicate that something or someone is part of a particular group, place, or thing
例子
John is the newest member in our team.
约翰是我们团队中最新的成员。
07
在, 于
used to indicate someone's participation in a profession, industry, or institution
例子
He 's in law school, hoping to become a prosecutor.
他在法学院，希望成为一名检察官。
08
用, 在
used to indicate the language or means of communication
例子
Please submit the form in ink.
请用墨水提交表格。
09
在...中，在...里
used to indicate the context or sphere within which the action is taking place
例子
In conducting scientific research, accuracy and reproducibility must be prioritized.
在进行科学研究时，必须优先考虑准确性和可重复性。
9.1
理论上, 从理论上讲
used to express a perspective, opinion, or limited scope
例子
He was confident in his own judgment.
他对自己的判断有信心。
10
在
used to describe the relationship between one part and the whole
例子
Three in ten homes now use solar panels.
现在十分之三的家庭使用太阳能板。
11
在, 里面
used to indicate spatial organization or structure
例子
The kids stood in rows for the photo.
孩子们排成几排拍照。
12
穿着, 戴着
used to refer to clothing or uniforms someone is wearing
例子
They marched in full uniform.
他们穿着全套制服行进。
13
在, 里
used to indicate something sensed, heard, or seen
例子
The ships were in view as we approached the harbor.
当我们接近港口时，船只在视线之内。
14
在, 里
used to describe something as part of a person's or thing's natural character or capacity
例子
I knew you had it in you to succeed.
我知道你内心有成功的能力。
in
例子
They walked in through the front door.
他们从前门走进来。
1.1
在里面, 内部
used to indicate being situated or surrounded within a space or enclosure
例子
The kids stayed in while the storm passed.
孩子们在暴风雨过去时呆在里面。
02
到达, 进入
used to express reaching a place, especially in reference to transport or scheduled events
例子
The shipment came in late this afternoon.
货物今天下午晚些时候到了。
03
里面, 进入
to be placed or merged into a system, structure, or composition
例子
She pasted the final photo in before submitting the scrapbook.
在提交剪贴簿之前，她把最后的照片贴进去了。
04
向内, 向海岸
used to refer to moving inland or to the shoreline
例子
The waves rolled in, covering the rocks one by one.
波浪向内翻滚，一块一块地覆盖岩石。
05
内, 近
(in baseball) used to describe defensive positioning closer to the batter
例子
With a runner on third, the infield came in.
三垒有跑者时，内野向前靠近。
5.1
向内, 里面
(of a pitch) used to describe a ball thrown near the inside part of the plate
例子
That curveball broke sharply in.
那个曲球急剧地向内弯曲。
06
在里面, 参与
used to indicate taking part in or having access to something, often privately, commonly followed by "on"
例子
Were you in on the surprise?
你参与了这个惊喜吗？
07
关系好, 受宠
in a favorable or friendly relationship with someone
例子
He tried to get in with the popular group by buying everyone coffee.
他试图通过给每个人买咖啡来与受欢迎的小组搞好关系。
7.1
在, 里
in a particular type of connection or status, often used in idiomatic expressions
例子
He's in deep with that investor group, financially and personally.
他在财务和个人方面都与那个投资者集团有深入的关联。
08
生产中, 活跃
(of oil well) actively producing oil
例子
The site will be in by next quarter.
该站点将在下个季度投入生产。
09
逐渐地, 慢慢地
used to indicate becoming noticeable or clearly perceived
例子
Her image came in through the fog.
她的形象从雾中显现出来。
10
当选, 就职
(in politics) used to refer to gaining official power or being voted into a role
例子
The new mayor came in last week.
新市长上周上任了。
in
例子
That hairstyle is n't in anymore.
那种发型已经不流行了。
例子
Is Mr. Thomas in, or should I call back later?
托马斯先生在吗，还是我应该稍后再打来？
03
时髦的, 流行的
belonging to or identified with a socially exclusive, trendy group
例子
He 's always been part of the in group at school.
他在学校里一直是in团体的一员。
例子
You'll find the sensor in the in compartment.
您会在隔间里找到传感器。
05
界内, 有效
(of a ball in sports) having landed or remained inside the boundaries of play
例子
From my angle, that serve was clearly in.
从我的角度看，那次发球明显在界内。
例子
The in administration proposed a tax reform bill.
现任政府提出了一项税改法案。
例子
They waited for the in tide to reach the shore.
他们等待涨潮到达岸边。
08
可用的, 已到达
having arrived, reported, or been finalized
例子
All the applications are in now.
所有的申请现在都已经提交了。
09
盈利的, 赚钱的
having gained or made money by a specific amount
Informal例子
They're in twenty percent over their initial investment.
他们比初始投资多了百分之二十。
Informal例子
His comment was full of in references.
他的评论充满了in的引用。
11
在, 里面
having reached a specified amount or point in time, money, consumption, etc.
例子
We were ten miles in before we saw a sign.
我们看到标志之前已经进入了十英里。
12
愿意, 准备好
willing, ready, or on board to participate in something
Slang例子
She's in to lead the client presentation.
她愿意领导客户演示。
In
01
内部人士, 掌权者
a person who currently holds a position of power, influence, or insider status
Informal例子
During the debate, the out challenged the policies of the in.
在辩论期间，局外人挑战了局内人的政策。
in-
01
不, 伊姆
used to indicate negation or absence
例子
Her response was insincere, which made him doubt her apology.
她的回应不真诚，这让他对她的道歉产生了怀疑。
02
进-, 入-
used to express movement inward or involvement
例子
They worked to incorporate new methods into the system.
他们努力将新方法纳入系统中。
