abreasta•breast /ə'brest/

adv 朝同一方向并排地，并肩地

• march four abreast 四人并排前进

• They walked two or three abreast. 他们三三两两地并肩行走。

词组keep abreast of 跟上(时尚、时代)，不落后于

• keep abreast of the times in science 跟上科学发展的时代步伐

keep abreast of the thought of the age 思想上不落伍