相关单词近义词 bag 袋, knapsack 背包, rucksack 帆布背包, pack 一群, haversack 肩背包, packsack 背包, back pack 背包临近词backside, backlog, backpacker, backpackers, backpack nuke, backpack pump, backpack shape, backpack camera, backpacking travel, backpacker tourism, backpack transmitter, backpackers and tourists 返回 backpacked