in的用法和短语（要详细.）

in
[In]
prep.
在...之内(上), 在...期间, 从事于, 符合, 穿着
adv.
进入, 朝里, 在家, 已到达(来临)
adj.
在里面的, 执政的
n.
执政者, 入口
[域] India , 印度

In
symb 〈化〉铟(indium)

in

In, go in, is talking about the direction. If you go in you have entered something you have entered the room.
For example: She went in the room because she wanted to know what was inside.
在. . . . 之内

in
in 1
AHD:[¹n]
D.J.[in]
K.K.[!n]
prep.（介词）
Within the limits, bounds, or area of:
在…里：在区间、界限或面积以内：
was hit in the face; born in the spring; a chair in the garden.
被打在脸上；在春天出生；花园里的一把椅子
From the outside to a point within; into:
从外面进入；入内：
threw the letter in the wastebasket.
把信扔进废纸篓
To or at a situation or condition of:
达到或处于某种状态或情形：
was split in two; in debt; a woman in love.
被分成两半；负债；恋爱中的女人
Having the activity, occupation, or function of:
有某种活动、职业或作用：
a life in politics; the officer in command.
政治上的生涯；指挥官
During the act or process of:
在某行动或过程中：
tripped in racing for the bus.
追赶公共汽车时绊倒
With the arrangement or order of:
按照某种安排或秩序：
fabric that fell in luxuriant folds; arranged to purchase the car in equal payments.
富有华丽褶皱的面料；安排分期付相同款额来买车
After the style or form of:
以某种风格或形式：
a poem in iambic pentameter.
以五音步抑扬格写成的诗
With the characteristic, attribute, or property of:
具有某种特征、品质或属性：
a tall man in an overcoat.
穿着大衣的一个高大男人
By means of:
以某种方式：
paid in cash.
以现金支付
Made with or through the medium of:
用或通过某种媒介：
a statue in bronze; a note written in German.
青铜雕像；用德语写的便笺
With the aim or purpose of:
有某种目的或目标：
followed in pursuit.
跟踪
With reference to:
特指：
six inches in depth; has faith in your judgment.
深度为6英寸；确信你的判断
Used to indicate the second and larger term of a ratio or proportion:
指比率：用于次要的和较大的比例或比率条件：
saved only one in ten.
只节省了十分之一
adv.（副词）
To or toward the inside:
朝里面或进里面：
opened the door and stepped in.
打开门走了进去
To or toward a destinatio