柯林斯詞典rucksack /?r?k?s?k/ (rucksacks) 1. N-COUNT A rucksack is a bag with straps that go over your shoulders, so that you can carry things on your back, for example when you are walking or climbing. 雙肩背[英國(guó)英語(yǔ)] 返回 rucksack劍橋詞典a backpack noun 旅行包，背包（同 backpack） 返回 rucksack