n.a bag carried by a strap on your back or shoulder
同义词：back packknapsackpacksackrucksackhaversack
v.hike with a backpack
"Every summer they are backpacking in the Rockies"
同义词：pack
backpacks例句
Backpacks in children. Back pain and backpacks in school children Backpacks vs. ponchos: Survival and movements of radio-marked ruffed grouse From Backpacks to Smartphones: Past, Present, and Future of Wearable Computers Effects of backpacks on students: Measurement of cervical and shoulder posture Backpacks on! Schoolchildren's perceptions of load, associations with back pain and factors determining the load Survival of Ring-Necked Pheasants with Backpacks, Necklaces, and Leg Bands Backpacks, back pain, sagittal spinal curves and trunk alignment in adolescents: a logistic and multinomial logistic analysis Method and apparatus for advertising using portable flat screen video equipped backpacks The social psychology of perception experiments: hills, backpacks, glucose, and the problem of generalizability
