相关单词近义词 backpack 双肩背包, knapsack 背包, haversack 肩背包, back pack 背包, rucksack 帆布背包临近词Packe, pack, packed factor, packed weight, packaging hue, packaging bag, packless type, packing space, pack of cards, packing drier, packed piston, packing knife 返回 packsack