1. 同路人,同情者:同类型物品/little sister | 同路人,同情者/fellow traveller | 同情关怀的态度/bedside manner
2. 旅伴:路线/party line | 旅伴/fellow traveller | 旅馆/public house
noun
1. a traveler who accompanies you
Synonym: companion fellow traveler
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2. a communist sympathizer (but not a member of the Communist Party)
Synonym: fellow traveler