next to somebody/something and facing the same way 並列;並排;並肩 cycling two abreast 兩人騎車並排而行 - abreast of somebody/something
A police car drew abreast of us and signalled us to stop. 一輛警車開過來與我們並行,示意我們停下來。
Word Originlate Middle English: from a- ‘in’ + breast.
Idioms
keep abreast of something
to make sure that you know all the most recent facts about a subject 了解最新情況;跟上(某事物的發展)