over part or all of the length of◾He walked along the street by himself.
moving forward◾She skipped and danced along.
in company with another or others◾She invited everyone she knew to come along.
as a companion
Copyright © 2016 by HarperCollins Publishers. All rights reserved.
towards or at a place ahead or in advance, esp. in space but also in time
Duleep walked forward into the room.
Video: pronunciation of 'along'
along 的词库—— 柯林斯 英语词库