rearguard

美 ['rɪr.ɡɑrd]

英 ['rɪə(r).ɡɑː(r)d]

复数：rearguards

同义词

n.

tail end,rear,back end,tail,back

rearguard

n.

1.	后卫部队a group of soldiers that protect the back part of an army especially when the army is retreating after it has been defeated

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