形容詞 abreast:

1. being up to particular standard or level especially in being up to date in knowledge
   同義詞：au courant, au fait, up on

副詞 abreast:

1. alongside each other, facing on the same direction

1. A Russian carriage drawn by a team of three horses abreast.
   三駕馬車由三匹馬并肩拉的俄國式馬車
2. Over the first four laps, Bedford stayed abreast of the German runner.
   在頭四圈里，貝德福德一直與那名德國賽跑選手并駕齊驅。
3. The ships were abreast of the fort.
   那些船與炮臺處于同一水平位置。