使用'Together'、'Against'、'Apart'和其他的短语动词 - 执行一个动作（背后和对面）

to make less progress than other competitors

落后, 滞后

to not succeed in doing something within the expected or required time limit

落后, 未能按时完成

to develop or progress more slowly than someone or something else

落后, 滞后

to leave without taking someone or something with one

留下, 抛下

to be the true cause of something, often not immediately apparent

在背后, 是原因

to remain in a location while others depart

留下, 停留

to discover, meet, or find someone or something by accident

偶然发现, 偶遇

to be clearly understood or communicated

传达, 表达

to remain well-informed about a particular topic, subject, or situation

保持了解, 关注

to present information clearly and effectively to others

传达, 表述

to meet someone unexpectedly

偶然遇见, 碰见