Question

abreast

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a∙breast / əˈbrɛst ; əˈbrest /
◙adv
1. keep / stay abreast of sth, to make sure that you know all the most recent facts or information about a particular subject or situation
• 了解某事的最新情况:
 »It's important to keep abreast of the latest developments in computers.
  了解计算机的最新发展很重要。
2. walk / ride etc abreast, to walk, ride etc next to each other, all facing the same way
• 并肩走/并排骑等:
 »two / three / four etc abreast ( = with two, three, four etc people or vehicles next to each other )
  二/三/四人（个）等并排
 »The planes were flying four abreast.
  飞机分成四架一排飞行。
3. level with someone or something or in line with them
• 并排地:
 »As the cardrew abreastof him, Jack suddenly recognised the driver.
  那辆车追上来与他并行时，杰克一下子就认出了驾车人。