It is about 100 meters along on the right.中为什么有along?它在这句话中的意思是什么?

it is said about what is it about it is about doing （ ）is it?it is about ten. what is it about men really?what is it about. It is not about you what is it about it?qwertyuiop That is all you know about it What is it about purple flowers? what is it about!1234567890-qwertyuiopasdfghjklzxcvbnm i think it is about dreams. he is very _____(worry)about it travel,is,about,it,space排列 He is _____ (ture) sorry about it. it is about one meter across (翻译) IT is nothing about sports,nothing about entertainment,it just about our country,这句有没有语法错误 what it is about?还是what is it about?它是关于什么的?迷糊了~