那几个关于“通过”的介词！

1.by 主要是通过或者借助某种手段、工具来实现或到达某地
by
[bai]
prep.
在附近, 在旁边, 经, 由, 依据, 按照, 通过, 用
adv.
通过, 经过, 附近
[域] Belarus, 白俄罗斯

by
[baI]
prep.
在近处；在旁边
standing by the window
站在窗户旁边
a table by the bed
床边的桌子
经；由；从
to enter by the door
由门进去
经过…旁
He walked by me.
他从我旁边走过。
不迟于
By tomorrow he'll be here.
他明天就到这儿。
被；由
written by Shakespeare
莎士比亚写的
根据；按照
to play by the rules
按规则比赛
相差
His horse won by a nose.
他的马以一鼻之差取胜。
以…方式
She earned money by writing.
她靠写作挣钱。
We went by air.
我们乘飞机走。
表示相（乘）除（以计算面积）
a room 15 feet by 20 feet
一间长20英尺宽15英尺的房间
to divide X by Y

2.through 主要是介词，通过...地方隧道、人群等等。
through
[Wru:]
prep.
穿过, 通过, 从开始到结束, 经由, 以
adv.
从头到尾, 自始至终, 直达地, 彻底, 完全
adj.
直达的, 直通的

through
[Wru:]
prep.
通过，经过
We walked through the market to the truck park.
我们穿过市场到了卡车停车场。
As soon as I'd got through customs I felt at home.
我一通过海关的检查,就感到轻松自如了。
The thief got in through the window.
小偷是通过这扇窗户进来的。
藉着；以…；经由
He became rich through hard work.
他靠努力工作而致富。
由于；因为
mistakes made through carelessness
由于粗心大意而造成的错误
从头到尾，由始至终
在…一带；在…之内
We travelled through France and Belgium on our holidays.
我们假期里是在法国、比利时一带旅行的。

3.via 主要是通过某人/某物而实现传递、转达等意图和目的。

via
[5vaIE]
prep.
经由，途经
to travel from Beijing to Shanghai via Tianjin
由北京经由天津去上海
通过；凭藉
I sent a message to Mary via her brother.
我托玛丽的兄弟把信带给她。