file
单词辨析：
普通用词，指人或物排成的行列；也指人、汽车等在等候时排成的队伍。
There is a line of trees on either side of the road.
道路两旁树木成行。
There is a long line at the ticket office.
售票处排着长队。
指人站立或行走时排成的列。
The soldiers were walking in single file.
士兵们排成一列纵队前进。
It was dark when we set off in file.
我们排成纵队出发时天已经黑了。
与 line 基本同义，但多指士兵等排成的队列。
On the shelves are rank after rank of liquor bottles.
架子上是一排排的酒瓶。
The soldiers stood in ranks.
士兵们列队站立。
指很整齐的一排人或事物，或剧院、飞机、教室里的一排座位。
The students stood in rows.
学生们站成数排。
He sat in the second row.
他坐在第二排。
指会议、工作等所用的文件、文献，也可指证件，如护照、身份证等，通常用复数。
She left some important papers in her office.
她把一些重要的文件留在了办公室。
His bed was covered with papers.
他的床上全是文件。
His papers were all in order.
他的证件全都合法有效。
尤指计算机中的文件。
close/open a file
关闭/打开文件
a data/graphics/text file
数据/图像/文本文件
I'm going to copy this file.
我打算复制这个文件。
Remember to save the file before closing it.
在关闭文档前记得要存盘。
相关例句：
His fingerprints were on file in Washington
他的指纹已在华盛顿记录在档。
When at home, most evenings would be spent reading, cutting up and filing away his photographs
晚上在家时，经常都是在看书或剪切和归类他的照片。
I filed for divorce on the grounds of adultery a few months later.
几个月后我以通奸为由提起了离婚诉讼。
We already have files on people's tax details, mortgages and poll tax
我们已经建立了人们纳税详情、抵押贷款以及人头税的档案。
I selected a file and pressed the Delete key.
我选定了一个文件，按下了删除键。
Double click on the icon to open the file.
双击图标打开文件。