rearguard action后卫战斗
Side rearguard边后卫
aztec rearguard墨西哥队后防线
fight a rearguard action竭尽全力
the rearguard of Yuan Ci-poem元词殿军
N-SING（单数型名词） In a battle, the rearguard is a group of soldiers who protect the back part of an army, especially when the army is leaving the battle. (尤指战场上军队撤退时的)后卫部队 ['the' N]
PHRASE（习语） If someone is fighting a rearguard action or mounting a rearguard action, they are trying very hard to prevent something from happening, even though it is probably too late for them to succeed. 负隅顽抗; 最后一搏 [journalism]
Mr. Lin looks increasingly like someone fighting a rearguard action to keep their job.
林先生越来越像是为了保住自己的工作而作最后一搏的那些人。