abreast
adverb uk/əˈbrest/ us/əˈbrest/
（朝同一方向）并排而行;并肩而行
used to say that two or more people are next to each other and moving in the same direction
We were running/swimming two abreast. 我们俩并肩跑步／游泳。
The motorcyclist came abreast of her car and shouted abuse at her. 那个骑摩托车的人跟上来，与她的车并行着，对她破口大骂。
keep abreast of something 了解…的最新情况;跟上…的最新进展
to make sure you know all the most recent facts about a subject or situation
I try to keep abreast of any developments. 我努力了解所有新的进展情况。
Doctors have to keep abreast of new treatment methods.
The authorities were struggling to keep abreast of all the new information.
He makes a point of keeping abreast of the news.
Although she had retired, she kept abreast of changes in her field.